Slashdot Mirror


Mars Rover Opportunity Still Stuck In a Dune

Maddog Batty writes "The mars rover Opportunity, which has been stuck in a sand dune since the end of April, is still going nowhere after wheel spinning attempts were made to free the probe. It did manage to move a very short distance as can be seen in the difference between these two images. Before this attempt the NASA JPL team were playing in their own sandpit trying to replicate the conditions on Mars. (older coverage)"

192 comments

  1. Late breaking news by Anonymous Coward · · Score: 2, Funny

    The rover is still stuck.

    Wait, I'm getting a newsflash right now... The rover is still stuck.

    Oh, wait, here's another update... The rover is still stuck.

    More on this as it develops.

    1. Re:Late breaking news by Council · · Score: 2, Insightful

      Hey, I'm really interested to see this. I didn't know it was still stuck. This IS news.

      --
      xkcd.com - a webcomic of mathematics, love, and language.
    2. Re:Late breaking news by Maddog+Batty · · Score: 4, Informative

      This is the first attempt to get out since it got stuck. Maybe I should have pointed this out in the article...

      --
      wot no sig
    3. Re:Late breaking news by darkfrog · · Score: 1

      Everyone knows that if a vehicle gets stuck, then it must be stuck in the mud. And we only get mud from martian dirt mixed with water! We've discovered water on mars!!!

      --
      --DarkFrog
      If the dead rise again, we're going to have some serious population control issues.
    4. Re:Late breaking news by Anonymous Coward · · Score: 0

      In other news, Generalissimo Francisco Franco is still dead.

    5. Re:Late breaking news by Council · · Score: 2, Interesting

      I don't, wait, what? Why is this flamebait? I am totally baffled.

      --
      xkcd.com - a webcomic of mathematics, love, and language.
    6. Re:Late breaking news by Anonymous Coward · · Score: 0

      And so we witness a new troll, born to the world. Troll of trolls!

    7. Re:Late breaking news by Anonymous Coward · · Score: 0

      Hell I didn't know it was stuck in the first place..

    8. Re:Late breaking news by Anonymous Coward · · Score: 0

      because it's baiting... THE FLAMES!

    9. Re:Late breaking news by Anonymous Coward · · Score: 0

      THey'll send a man to mars to push out the unstuck rover.

    10. Re:Late breaking news by Lord+Haha · · Score: 0, Redundant

      Breaking News update...

      Generalissimo Francisco Franco is still dead!

    11. Re:Late breaking news by Anonymous Coward · · Score: 0

      Well, old timer, I laughed anyway. Sorry no mod points here.

  2. Its in here somewhere... by zappepcs · · Score: 1

    There has to be a joke about 4WD enthusiasts, a couple of 12 packs, and an alliance between the Monster truck association and NASA.

    1. Re:Its in here somewhere... by Anonymous Coward · · Score: 0

      Probably a blues song in there too...

    2. Re:Its in here somewhere... by HiddenCamper · · Score: 1

      At least some martian bugger didnt steal it's rims.

  3. Well... by Fifty+Points · · Score: 3, Funny

    Millions of dollars launched into space, only to get stuck in a Martian sand dune.

    --
    I'm in between insightful sigs right now...
    1. Re:Well... by Anonymous Coward · · Score: 0

      Millions of dollars launched into space, only to get stuck in a Martian sand dune.

      the martians did it! :)

      hey, i wonder if nasa has the $20,000 shovels and buckets to play in their multi-million dollar sandbox they're using to simulate this?

    2. Re:Well... by kannibal_klown · · Score: 1

      This is why we should send people to Mars. While more expensive and potentially dangerous, we won't have to deal with bonehead stuff like this.

      Instead of wasting a month because their toy truck got stuck in the sand, a person could just keep walking. If their big rover gets stuck, then use cables and a pully like the owner of a Jeep Wrangler would do. Or maybe cary a set of planks around with them to place under the tires.

      A person could also simply dig a hole with a shovel instead of the neat little tricks Nasa has tried with sprinning a tire in place to see if there's water 2cm underground.

      Human beings can do 100x more than a rover can and more efficiently. They can also easily handle unexpected events (such as this) a lot easier since they're not limited to 4 wheels and a camera.

      The 2 things holding us back are price and safety.

    3. Re:Well... by jfengel · · Score: 4, Insightful

      Alternatively, we can send up another rover. It's way cheaper than getting a human being all the way to Mars alive. And we don't have to worry about bringing it back.

      So yeah, when you say that "the 2 things holding us back are price and safety," those aren't two little things. They're the whole ball game. For the price of sending a human to Mars we could send scores, perhaps hundreds, of rovers, with zero risk to human life. No, we don't learn as much, but it means that when we do finally send humans they go fully prepared.

    4. Re:Well... by flyingsquid · · Score: 3, Interesting
      Human beings can do 100x more than a rover can and more efficiently. They can also easily handle unexpected events (such as this) a lot easier since they're not limited to 4 wheels and a camera.

      Would a human really make things that much easier? I imagine humans would use some sort of wheeled rover to get around on Mars... and that could get stuck in a dune as well. I've been stuck in sand and mud a couple of times, and getting out can be a major ordeal, even without the constraints of a heavy space suit and limited oxygen.

      The other thing to keep in mind is that Homo sapiens is a "mature technology"; we haven't undergone any large changes in 100,000 years except for the software upgrades. Robots are a technology that is in their infancy, and in the next 10-20 years will make major advances in their capabilities. Which makes it all the more remarkable when you consider that robots are currently ahead of humans in many departments. Maybe humans really can do "100x more than a rover, and more efficiently", but robots can travel to Mars and explore it for under a billion dollars, and do that now, and humans can't.

    5. Re:Well... by Stween · · Score: 1

      Human beings can do 100x more than a rover can and more efficiently. They can also easily handle unexpected events (such as this) a lot easier since they're not limited to 4 wheels and a camera.

      Don't know about anyone else here, but I hate when I get stuck in a sand dune. It's damn embarrassing, if nothing else.

    6. Re:Well... by Jonathunder · · Score: 1

      The other thing to keep in mind is that Homo sapiens is a "mature technology"; we haven't undergone any large changes in 100,000 years except for the software upgrades.

      Posting from a help desk, I can tell you most of the software "upgrades" are pretty damn buggy.

    7. Re:Well... by AndroidCat · · Score: 1

      Each rover can be improved from what we've learned. Eventually we'll be able to build one that will handle most Mars obstacles and beat Mr Incredible! But seriously, we might as well learn more about Mars before losing people because of an oopsie.

      --
      One line blog. I hear that they're called Twitters now.
    8. Re:Well... by Anonymous Coward · · Score: 0

      I already started to get a sense you guys weren't going to get me back. YOU BASTARDS!

      Com'on, it's cold up here! There's nothing but sand, and I'm developing an allergy to that darn dust!

      Please? I wanna go home!

      Sincerely,
      MER-B

    9. Re:Well... by darc · · Score: 1

      Ehm? I don't exactly see your point. What we've learned on mars is from instruments that are attached to the rover. A human alone doesn't accomplish very much science, and still requires the application of instruments. I can't see what kind of science you're looking for that would require the use of a human that may require that much mobility. We want to know the chemical composition? The rover is more than enough. All other things are mostly chemical makeup, and no matter how many humans you send at it, it isn't done any better.

      Next, do you realize your efficiency point? Effeciency denotes a ratio of resources to effectiveness. You need to send an extremely large amount of food along with the astronaut, and even if you propose farming on mars, that's still a gigantic amount of hydroponic equipment. If you sent an equivelant mass of scientific equipment on rovers, you'd accomplish much more meaningful science. All in all, NASA's mission has long been over with the rovers, they've measured all the things they're looking for.

      Although sending people to mars is "cool", it offers no real scientific advantage whatsoever. As per your example, digging a hole with a shovel is inefficient versus drilling straight down, when you have to feed the astronaut the weight of the rover each day.

      --
      Tired of legitimate data sources? Try UNCYCLOPEDIA
  4. Er, thanks? by DrEldarion · · Score: 3, Funny

    In other news, the sky is still blue, water is still wet, and heat is still hot. Just letting you know that nothing has changed.

    1. Re:Er, thanks? by Council · · Score: 4, Insightful

      All those things are things that are to be expected.

      Just because a story contains the word "still" doesn't mean it's not news. If the president's plane still hasn't arrived, that's worth reporting. I don't know about you, but this is, to me and the people reading over my shoulder, the most interesting stories on the front page today.

      --
      xkcd.com - a webcomic of mathematics, love, and language.
    2. Re:Er, thanks? by Anonymous Coward · · Score: 0

      MOD PARENT UP

    3. Re:Er, thanks? by jlp2097 · · Score: 1

      Ahh, the irony - a post complaining about a redundant article gets modded redundant.

    4. Re:Er, thanks? by Anonymous Coward · · Score: 0

      Meta-redundant?

    5. Re:Er, thanks? by frankvl · · Score: 1

      Don't be so pessimistic! The pictures are clearly showing progress.

  5. stuck,, by Turn-X+Alphonse · · Score: 1

    But wouldn't that mean it had to dig it's self into something to be stuck.. like wet mud..?

    What is it stuck on?

    --
    I like muppets.
    1. Re:stuck,, by bigjnsa500 · · Score: 4, Interesting

      Maybe an underground water source? From those 2 pictures, the sand looks like wet beach sand.

      --
      This is a test. This is a test of the emergency sig system. This has been only a test.
    2. Re:stuck,, by Fjandr · · Score: 1

      It's frequently easier to get out of wet sand than it is to get out of dry sand.

    3. Re:stuck,, by Anonymous Coward · · Score: 0

      Yes, because we all know liquid water can exists at the temperature and pressure conditions on mars.

      Of course it can't, at least not for very long.

    4. Re:stuck,, by Sanfamite · · Score: 2, Insightful

      If you have ever walked on a beach with fluffy, fine-grain sand, you would notice the inherent difficulty in traversing even the dry variety. Since the entire traction surface can be moved by the rover, it could easily end up accidentially digging itself into a small ditch, from which removal could be difficult. Given the rover's weight, wet sand would actually provide superior traction than dry sand due to the stronger cohesion (for lack of a better word) between the grains.

      Then again, we're geeks. None of us should have first-hand experiences with this "sand" thing ;)

    5. Re:stuck,, by Anonymous Coward · · Score: 0

      Two words and a punctuation mark: you moron!

    6. Re:stuck,, by Anonymous Coward · · Score: 2, Informative

      the sand is likely VERY fine sand, and fine sands have a tendency to behave much like fluids.

  6. Re:PEOPLE WITH MOD POINTS: CALL FOR HELP by VoidWraith · · Score: 1

    How ironic... that you have been reposting that too. But I agree with you. I get random crap emails like that all the time, its so damn stupid. Don't mod the messenger down! Save the points for the real bad guy...

  7. Re:PEOPLE WITH MOD POINTS: CALL FOR HELP by Anonymous Coward · · Score: 0

    You're complaining about a comment in trolltalk?

  8. Well, it's not a pit by Council · · Score: 5, Funny

    At least it's doing better than Spirit, which last I heard was sliding inexorably into an ominious pit of sand, where it will be slowly digested over a thousand years.

    --
    xkcd.com - a webcomic of mathematics, love, and language.
    1. Re:Well, it's not a pit by Rirath.com · · Score: 1

      How to sing the Blues - Rule #4
      Source, who knows... several. Google it.

      The Blues ain't about choice.
      You stuck in a ditch,
      you stuck in a ditch;
      ain't no way out.

    2. Re:Well, it's not a pit by thegalacticcadet · · Score: 1

      poor spirit.

      (insert obligatory e.t. joke here)

    3. Re:Well, it's not a pit by Anonymous Coward · · Score: 0

      The Sarlacc shot first!

    4. Re:Well, it's not a pit by KhromeGnome · · Score: 1

      Off topic, but where does your sig come from? It's funny in it's own right, but is it a reference to something? Math geeks gotta know.

    5. Re:Well, it's not a pit by Council · · Score: 1

      I, uhh, I saw it on some site of math jokes. It's the only funny joke equation I know (screw the log cabin thing).

      --
      xkcd.com - a webcomic of mathematics, love, and language.
  9. Next time, by Anonymous Coward · · Score: 0

    NASA should contact George Lucas ans ask for the plans of R2. I wouldn't be surprised that R2 is also amphibious...

    1. Re:Next time, by Anonymous Coward · · Score: 0

      NASA should contact George Lucas ans ask for the plans of R2. I wouldn't be surprised that R2 is also amphibious...

      It's funny you should mention George Lucas. I say that the Mars rover mission is some of his best work to date. It almost feels like Mars is a real planet. The only question remaining is, did Opportunity shoot first, or did the dune?

    2. Re:Next time, by Anonymous Coward · · Score: 0
      Well, to be fair, it reminded me more of Contact:

      Why build one when you can build two for twice the price

  10. Just a test by g00set · · Score: 5, Informative

    According to JPL's site the latest move was not an attempt to *free* the rover.

    "Opportunity rotated its wheels on sol 463 for the first time since the rover dug itself into a sand dune more than two weeks earlier. The wheels made about two and a half rotations, as commanded, and the results were a good match for what was expected from tests on Earth. In the loose footing, the rover advanced 2.8 centimeters (1.1 inch) forward, 4.8 millimeters (0.19 inch) sideways and 4.6 millimeters (0.18 inch) downward. After further analysis of the results, the rover team will decide whether to repeat the same careful movement again on sol 465."

    --
    ... and furthermore ... I don't like your trousers.
    1. Re:Just a test by Waffle+Iron · · Score: 2, Funny
      A little further down it says:

      "If these maneuvers aren't successful by sol 483, then the controllers will have to accept the disintegration risk, and they will go ahead and hit the hyperspace button."

    2. Re:Just a test by cnettel · · Score: 1

      With this glorious speed it'll advance almost 10 meters in 668 sols (one Martian year), not including any need to power down during the winter... I really hope they get it going again. As one with some experience with stuck IBM Deathstar harddrives, I know of all the desperation!

    3. Re:Just a test by Anonymous Coward · · Score: 0

      I don't think they had Gosper or Greenblatt on the programming team.

  11. Relax, it's far from doomed by thompson42 · · Score: 5, Informative

    The rover managers have successfully tested methods for extracting Opportunity from the sand. Principal investigator Steve Squyres has said all along that it will be a slow process:

    http://athena.cornell.edu/news/mubss/

  12. Re:PEOPLE WITH MOD POINTS: CALL FOR HELP by Council · · Score: 1

    The poster is a repeated troll, not troll reporting as claimed. Ignore.

    --
    xkcd.com - a webcomic of mathematics, love, and language.
  13. JPL Status report by spworley · · Score: 4, Informative

    Opportunity didn't move for two weeks because JPL is being properly conservative and haven't tried until they understood the situation. The first small movement command was given on May 14, and Opportunity moved about the way they expected.

    http://marsrovers.jpl.nasa.gov/mission/status_oppo rtunityAll.html#sol464

  14. If only Spirit could help by ravenspear · · Score: 4, Funny

    In other news, a team of NASA's best psychologists is scheduled to hold a meeting where they will determine how to best break the news to Spirit that her brother may be nearing the end of his life.

    Mission planners at NASA are concerned about the consequences this could have. While they still want Spirit to remain functional and capable of scientific discovery, they are aware of the moral issues involved and have decided against keeping the news from her, fearing a backlash from the MCLU (Mars Civil Liberties Union).

    NASA administrator Michael Griffin released a statement saying the team is carefully weighing the choices and will continue striving to preserve Spirit's technical functionality and psychological stability. Should Spirit become too depressed over the impending demise of her brother and refuse to cooperate, there is talk of calling in a special favor from a nearby resident to cheer her back up. Apparantly Spirit has recently become infatuated with a local hunk named Marvin.

    1. Re:If only Spirit could help by david.given · · Score: 1
      In other news, a team of NASA's best psychologists is scheduled to hold a meeting where they will determine how to best break the news to Spirit that her brother may be nearing the end of his life.

      There's no mention of this on Spirit's livejournal --- but then, she never did get on terribly well with her sister (not brother, BTW). Opportunity seems to be mildly worried, but is in no way panicking yet...

  15. Even geeks like to par-tay by coupland · · Score: 2, Funny

    >Before this attempt the NASA JPL team were playing in their own sandpit trying to replicate the conditions on Mars.

    Okay, so I gather that the sand was to simulate martian soil conditions, and the radio-operated vehicle simulated the rover's movements. But what was the significance of the tanning lotion and beach umbrella? :P

  16. Getting stuck by Council · · Score: 2, Interesting

    It always seemed to me that a good way to avoid getting robotic vehicles stuck would be to have thin, strong arms that go up and out, like cranes, and can simply extend down to lift the body of the robot out of whatever's sticking it. It's a bit of extra stuff, but it makes for an unstickable robot.

    I thought about this when I was considering how to make an autonomous RC car that could cross the country without interference. It has to be able to get out of a lot of different things.

    Anyone know of links to ways robots unstick themselves?

    --
    xkcd.com - a webcomic of mathematics, love, and language.
    1. Re:Getting stuck by pmazer · · Score: 3, Insightful

      The problem is that every pound probably costs an extra $10 million.

    2. Re:Getting stuck by Anonymous Coward · · Score: 0

      with all those tools, it's got to have a main delector dish somewhere in there, right?

    3. Re:Getting stuck by Council · · Score: 1

      Not for Spirit and Opportunity. For robots in general.

      --
      xkcd.com - a webcomic of mathematics, love, and language.
    4. Re:Getting stuck by Anonymous Coward · · Score: 0

      Great idea. I'm sure you're the first person to have thought of it.

      Now, stop for a second and think. How big is the thing it's stuck in? If it were to plant its arms down and lift itself out 1) would it be able to use its arms to move itself far enough forward so that it doesn't get stuck again? and 2) what's to say that the arms themselves don't get stuck?

      So basically, you're adding all this weight and complexity to a system and it will probably do nothing to help out.

    5. Re:Getting stuck by Deadstick · · Score: 1

      So if it had a $50 million sack of kitty litter in the trunk...

      rj

    6. Re:Getting stuck by Council · · Score: 1

      The arms are like cranes. (I'm not saying I'm the first person to think of it -- I was specifically asking for links or information on the topic).

      The arms would be long and narrow, rods that it can plant some distance away to lift the body up and then swing it forward or backward or even just tip over. Most things I imagine it getting stuck in -- for example, things that I constantly see off-road RC cars get stuck in -- seem like they could be escaped by something like this. I'm wondering whether it's feasable and has been done.

      --
      xkcd.com - a webcomic of mathematics, love, and language.
  17. The Martian are pissed by Newrad · · Score: 0

    When will the various space agencies ever learn that the Martians don't want us on their planet anymore? How would you like it if someone threw a R/C car over your fence and started studying your yard? You'd stick it in a dune too.

  18. It should have had a manual transmission. by Anonymous Coward · · Score: 0

    Then they could have rocked it back and forth to get it out. Works for snow anyway.

  19. The Mars Rover isn't really stuck in a dune... by consumer_whore · · Score: 5, Funny

    NASA is just practicing to be on http://www.carstuckgirls.com/

    1. Re:The Mars Rover isn't really stuck in a dune... by rich_r · · Score: 5, Funny

      Possibly the finest example of a niche market I have ever seen!

    2. Re:The Mars Rover isn't really stuck in a dune... by Anonymous Coward · · Score: 0

      it's all about the mud fights after being stuck. this is what the martians are looking forward to

    3. Re:The Mars Rover isn't really stuck in a dune... by Anonymous Coward · · Score: 0

      I.... whoah :O uh... why is that making me hard? wtf!

  20. Vote. by mctk · · Score: 1

    Spirit or Opportunity?

    --
    Paul Grosfield - the quicker picker upper.
  21. I've skimmed TFA's, but... by tunabomber · · Score: 5, Interesting

    I still have this question: if they do manage to get it free, how long until it just gets stuck again?

    From the pictures it looks like Opportunity is entering a Martian dune sea, which will offer many more opportunities (npi) to get stuck once more. Do they have a plan to identify/avoid soft spots like this one in the future?

    --

    pi = 3.141592653589793helpimtrappedinauniversefactory71 ...
    1. Re:I've skimmed TFA's, but... by MobyDisk · · Score: 4, Informative

      They have a plan.

      The rover got stuck because they are driving over a series of long ridges in the sand. These ridges are in rows that run mostly along one direction. The rover was originally expecting these ridges to be solid and it drove straight perpendicular across them. Unfortunately they are not as solid so it got stuck.

      Once they get the rover un-stuck, they will instruct it to move parallel to the ridges, and to weave in between them when possible to make forward progress. It will be slow, but it should minimize the chances of getting stuck again.

    2. Re:I've skimmed TFA's, but... by ScottMaxwell · · Score: 4, Informative
      I still have this question: if they do manage to get it free, how long until it just gets stuck again?

      That's an excellent question, and the short answer is, we don't know. We crossed about 4km of this stuff uneventfully before we encountered the current dune (BTW, it's technically a ripple, not a dune), and we aren't completely sure what makes this one different from the rest.

      I've been a little out of the loop, since I switched back to Spirit a few weeks before the Ripple Event, but I followed some of the email traffic as best I could. Last I saw, the working hypothesis was something to this effect: this ripple just happened to be a little taller and steeper than normal, and we just happened to be gaining a little elevation anyway (so we were at a greater tilt than normal) when we came across it.

      I don't think there are yet any particular guidelines about avoiding them, but as you might expect, there's a team working on it.

      The two basic possible explanations seem to be geometry (which I touched on above) and material. Someone threw out the idea that we can tell "dangerous" ripples from the regular kind by their albedo -- possibly, hazardous (fluffy) ripples are made of lighter dust and are therefore brighter. But I don't know whether that idea gained any traction. To my eyes, the ripple we're on didn't look particularly brighter than many others we've crossed without incident, but I didn't do any systematic analysis, so I can't really say.

      My impression is that geometry is the leading candidate explanation, and if that proves to be the case, our guidelines will likely include evaluating every sol's traverse path for hazardous geometry. If we can't tell the rover how to avoid them itself, it might also mean no more autonav drives (where we let the rover find its own way), which would significantly slow our progress. But then, so would getting into another of these ripples.

      This is all still a work in progress, though. Just remember, this is why we call it "exploration"!

      --

      ``Life results from the non-random survival of randomly varying replicators.'' -- Richard Dawkins
    3. Re:I've skimmed TFA's, but... by Tablizer · · Score: 1

      Once they get the rover un-stuck, they will instruct it to move parallel to the ridges, and to weave in between them when possible to make forward progress. It will be slow, but it should minimize the chances of getting stuck again.

      It appears that the dunes run mostly paralell to the path of Oppy's destination (etched terrain and a big crater). Thus, it can move and stay in the troughs most of the time with only a few lateral movements. It just won't get a very good view of other possible targets along the way.

  22. Important Update!!! by Cervantes · · Score: 0, Redundant

    Hey everyone! Breaking news!! Nothing has changed!!! More at 11!!!!

    --
    If I knew the wedgies I gave you back in 6th grade would have resulted in this . . . I might have taken a moments pause.
  23. Call AAA by www.sorehands.com · · Score: 5, Funny

    Nasa: Hello, my rover is stuck in a dune.

    AAA: Where is the dune?

    Nasa: On mars.

    AAA: What is the make and model of the vehicle?

    Nasa: It's a rover.

    AAA: What color?

    Nasa: Grey.

    AAA: What is the license plate?

    Nasa: It does not have a license plate.

    AAA: I'm sorry, if you don't have a license plate, we can't send out a tow truck. [click].

    1. Re:Call AAA by Anonymous Coward · · Score: 0

      you win.

    2. Re:Call AAA by Anonymous Coward · · Score: 0

      20 years from now, somebody at NASA will do an inventory audit, discover that a rover is in the books but cannot be located, and a hunt will be started to find out who 'stole' the rover.

    3. Re:Call AAA by AndroidCat · · Score: 1

      And when they finally check on Mars, they'll find the rover jacked up in the badlands and stripped. Grand Theft: Meridiani Planum.

      --
      One line blog. I hear that they're called Twitters now.
  24. Excuse to send a human to mars! by stfvon007 · · Score: 2, Funny

    We should use this as a reason to send a human to mars. The primamry mission will be to get oppritunity out of the dune, using a mars tow buggy. Then if theres time, they'll play some martian golf. The'll need to watch out for those sand traps though.

    --
    All misspellings and grammatical errors in the above post are intentional and part of my artistic expression.
  25. legs by jlebrech · · Score: 1

    those robots should have legs not wheels.

    1. Re:legs by chrisblore · · Score: 1

      Then it'd be like slipping into quicksand here on Earth! Perhaps it should take it's own carabena and attach it to a fixed point so it can tow itself out?!

    2. Re:legs by Anonymous Coward · · Score: 0

      I recall seeing a prototype with legs instead of wheels so maybe they can consider that for future missions. Meanwhile Opportunity's robotic arm could maybe "give a hand" to push into the sand and get the rover going again?

  26. Article Correction by Chokai · · Score: 4, Informative

    The drive that you are seeing in these images that supposedly did not get the rover out of the dune is in reality a short test drive performed on Sol 463. The response from the rover was roughly what was expected by the MER engineers as you can read on the JPL site.

    Considering that the wheels spun the equivalent of a 60 meter drive when they got stuck in the first place. (according to Dr. Albert Haldemann, Deputy Project Scientist for MER) they anticipate a fair amount of driving/spinning to get out. Also obviously if thier testing at JPL was wrong they did not want to worsen the situation to the point of no return on thier first try.

  27. This article is bullshit.. by Anonymous Coward · · Score: 0

    Nasa has not yet attempted to free the rover from the dunes. They have just tried rotating the wheels, which went as planned... They wont attempt to free it before atleast next week.

  28. Maybe they should wait until night-time... by mikael · · Score: 3, Interesting

    ... then the ground will be coldere and firmer.

    --
    Vintage computer adverts: http://www.vintageadbrowser.com/computers-and-software-ads
    1. Re:Maybe they should wait until night-time... by Anonymous Coward · · Score: 0

      You're right! The NASA scientists would have never thought of this! You light the world with your brilliance! Perhaps now you could radiate your genius and tell everyone exactly how politicians should run the world and how coaches can coach, like half the barbers and taxi drivers in the world~

    2. Re:Maybe they should wait until night-time... by Anonymous Coward · · Score: 0

      That'll work. Because we can send a signal through the planet.

    3. Re:Maybe they should wait until night-time... by StonedRat · · Score: 1

      Surly they have the ability to tell the rover to wait a few hours before doing what it's been told to do.

      --
      "Religion is the most malevolent of all mind viruses." - Arthur C. Clarke.
    4. Re:Maybe they should wait until night-time... by Anonymous Coward · · Score: 0

      That'll work. Because we can send a signal through the planet.

      One would assume that if we told the rover to commence an operation at a certain time, its internal clock could take care of executing the operation then.

    5. Re:Maybe they should wait until night-time... by Erik+Hensema · · Score: 3, Insightful

      I think the soil should be moist in order to get firmer when cool (mostly due to condensation I imagine).

      --

      This is your sig. There are thousands more, but this one is yours.

    6. Re:Maybe they should wait until night-time... by globalar · · Score: 1

      The presence of a small amount of moisture would probably affect silt more than sand. Significant moisture would have much more impact, but I'm not aware of that possibility here.

      However, temperature is still very relevant to the actual granulars. Crystalline forms (like sand) shrink and expand based on temperatures. This isn't overt at the granular size because their structures have already been worn to some degree (the most obvious defects/weaknesses have been exploited).

      Temperatures in arid regions (especially without a climate) are fairly extreme. Even with this stress on the granulars, they should be fairly resilient because of their previous weathering and because of their placement. Since Mars lacks water-influenced weathering, their sizes should be fairly non-uniform (relative to one another), so there should be some space between each grain for expansion.

      The net result being that temperatures in this case probably only contribute to long, long-term issues. The short-term problem of being stuck cannot exploit these forces.

    7. Re:Maybe they should wait until night-time... by Anonymous Coward · · Score: 0

      ... then the ground will be coldere and firmer.

      You're fucking kidding, right?

      You don't actually think that lowering the ambient temperature from -250 degrees to -260 degrees (or whatever it is) is going to affect the firmness of the dirt?

    8. Re:Maybe they should wait until night-time... by carpe_noctem · · Score: 1

      Great idea! Let's call NASA right away; I'm sure they could use great thinkers like this right now!

      --
      "Quoting famous computer scientists out of context is the root of all evil (or at least most of it) in programming." - K
    9. Re:Maybe they should wait until night-time... by jacksonj04 · · Score: 3, Interesting

      Along with the batteries being colder...

      There's a reason it only works during daytime. The rover can't maintain enough charge in the batteries to perform drive maneuvers and still wake up the next morning. It's difficult enough to shut down to a minimum requirement and keep the systems warm enough to boot in the morning, having to power up the entire rover to perform a complex drive using a hell of a lot of power would just kill it completely.

      Then again, I could be wrong.

      --
      How many people can read hex if only you and dead people can read hex?
    10. Re:Maybe they should wait until night-time... by cnettel · · Score: 1

      I don't think the batteries are designed to provide enough power for it to even transmit properly during that time, let alone powering the motors.

  29. this can all be traced back to one simple error by Anonymous Coward · · Score: 0

    they cheaped out on NOS

  30. if stale... by Anonymous Coward · · Score: 0

    note post only if stale...

  31. Rancor by antiaktiv · · Score: 2, Funny

    Now taking bets at when a Rancor will devour it!

    1. Re:Rancor by CrazyJim1 · · Score: 1

      If its stuck on Dune, odds are it will be eaten by a sand worm soon.

    2. Re:Rancor by Anonymous Coward · · Score: 0

      Certainly you mean a sarlacc?

  32. Keeps going and going and going and stuck!!! by Space_Soldier · · Score: 1

    So, it keeps going and going and going until a human gives it the command to make a wrong turn. Maybe, we should upgrade the remaining rover with AI software that will analyze the travel objective and choose the best path to get there.

  33. I don't know why we went to this stupid planet... by my_haz · · Score: 1

    I mean in my home town if someone gets there car stuck in the snow the neighbors and friends will come out with shovels and the ole heeeeve-hooooe. But where are the locals of mars now, heh HEH?

    pifff Martian's who needs um.

  34. here's how to get it out by Anonymous Coward · · Score: 1, Informative

    Put her in low gear. Don't accelerate hard. Just keep your foot off the gas. Let her ride slowly out of the rut. Once you've move a little bit, turn the wheel, gently, then keep moving a little. Eventually you get yourself out of the rut and back rollin' again.

    1. Re:here's how to get it out by Anonymous Coward · · Score: 0

      to mod: whoosh!

    2. Re:here's how to get it out by rbarreira · · Score: 1

      Yeah, this worked for me once, when my car got stuck... so it must work for the Rover too! I guess...

      --

      The AACS key is NOT 0xF606EEFD628B1CA427BEA93A9CA9773F
  35. I wonder. . . . by Anonymous Coward · · Score: 0

    I wonder what Richard C. Hoagland will say about this.

  36. I guess is not "Trail Rated"(c) by Anonymous Coward · · Score: 0
  37. It Ran Over E.T.!!! by bunratty · · Score: 1

    You can see the head right in the center of this picture, with the head facing up and eyes closed. This story about being "stuck" must be just a cover-up so no one is accused of being a hit-and-run driver.

    --
    What a fool believes, he sees, no wise man has the power to reason away.
  38. you are just flat out wrong... by way2trivial · · Score: 1

    and here's my best argument

    100X more efficiently?

    How much mass, do we have to get into orbit, to get a man to mars and back...

    how much mass, do we have to get into orbit, to drop a rover on the surface of mars one-way?

    add that to your efficiency calculations, and get back to me...

    --
    every day http://en.wikipedia.org/wiki/Special:Random
    1. Re:you are just flat out wrong... by kannibal_klown · · Score: 2, Interesting
      add that to your efficiency calculations, and get back to me...


      I concede that the cost of sending people to Mars and keeping them alive is high. And we're still a little "fuzzy" on how to do it. But.

      1) How much time went into designing the rover and what-not.

      2) How much info have we gained over MONTHS of use?

      3) How much can saidd rover actually accomplish.

      4) How many different rovers will we send to accomplish what a person (or team) can do in one shot.

      5) A person can do a lot more a lot quicker than the rover. Example, want to dig a hole? Use a shovel and maybe pick-axe. In a very short time you can get a couple meters down as opposed to waiting for our rover to spin its wheels just to see a few cm.

      I'm not saying we shouldn't use these drones for now. They're an obvious stepping stone to learn what we need to. But at some point we have to say "These things are only doing so much. Let's send some people there."

      I think we should start looking into the sending of people more seriously, instead of some people (that I know) whine and moan that it's not worth their tax dollars.
    2. Re:you are just flat out wrong... by Karma+Farmer · · Score: 1

      I've read that Spirit and Opportunity combined cost around 800 million dollars. A manned mars mission might cost a trillion dollars.

      In my book, that's about 2000 times the cost of one probe, not 100 times the cost.

      And, frankly, if a mars shot was anything like the moon shots, it would just be a vanity mission. The people wouldn't add a damn thing.

  39. You haven't convinced me by hey! · · Score: 2, Interesting

    This is why we should send people to Mars. While more expensive and potentially dangerous, we won't have to deal with bonehead stuff like this.

    Sorry, you haven't convinced me.

    The rovers, IIRC, have exceeded their planned mission length. The original mission was justified on a 90 sol duration basis, although more was hoped for. Opportunity got stuck on sol 446. Your hypothetical astronauts wouldn't have been able to deal with this "boneheaded stuff" because they'd have been on a very expensive return trip months ago.

    If anything, the success of the rovers have really reduced my enthusiasm for a manned Mars mission, at least any time soon. I think it should happen eventually, but there's a lot to be learned from robotic missions, both scientifically and from an engineering standpoint. Engineering failures on robotics missions provide us with an opportunity to learn at a much lower cost, both financial and human, than manned missions. A later manned mission will be both safer, cheaper, and better focused scientifically on things humans can uniquely do.

    --
    Post may contain irony: discontinue use if experiencing mood swings, nausea or elevated blood pressure.
    1. Re:You haven't convinced me by saskboy · · Score: 1

      "A later manned mission will be both safer, cheaper, and better focused scientifically on things humans can uniquely do."

      Precisely. What would have happened to the people, if their Mars rover they were in, became trapped in sand 3km away from their base? would they be able to walk back? Is there quick-sand on Mars? Would retractable skis on the rover get them out of this mess?

      --
      Saskboy's blog is good. 9 out of 10 dentists agree.
    2. Re:You haven't convinced me by kannibal_klown · · Score: 1
      Precisely. What would have happened to the people, if their Mars rover they were in, became trapped in sand 3km away from their base?


      Find a nearby boulder. Tie cable from rover to boulder. Use either electronic motor to retract cable OR hand-powered lever. This is used now-a-days with 4x4 offroaders.

      Place planks under the wheels. Use them to "back out" the rover. Maybe you'll need to keep re-placing the planks when the rover goes too far, maybe not.

      This is assuming of course that the sand isn't "quicksand."

      Lastly, I doubt the entire team would go out at once just in case something like this happened. In which case, have 2 rovers; the second one go out as far as they safely can and coordinate rescue.

      Obviously there are more complications involved, but on the other hand our rover is pretty much S.O.L where as people could have better luck.
    3. Re:You haven't convinced me by hey! · · Score: 1

      All of which is true, but it ignores the following counterexample: There is as we speak a second rover on Mars.

      That's what not having to have the redundant subsystems needed to support a man-rated system allows you to do: have an entirely redundant mission for the same or less cost.

      And, in the end, you don't want to rely on the flexibility of humans to get themselves out of trouble. There is redundancy and backup suppport in terrestrial situations that won't be there on Mar.s Offroaders rely on the fact that if they really get stuck, they can walk out or get help from another offroader, or even get a helicopter rescue. I once worked with a paleontolgist who drove unbelievable routes in the Montana badlands with his F-350. He went up slopes I was sure were impossible to climb, and down slopes I was sure would send the truck rolling. He had decades of experience with the terrain there. Yet even he got stuck from time to time, and had to hike out to find a rancher who could tow him out with one of their giant 4WD tractors.

      By the way, there it's very unlikely there will be quicksand on Mars. Quicksand requires flowing water.

      --
      Post may contain irony: discontinue use if experiencing mood swings, nausea or elevated blood pressure.
    4. Re:You haven't convinced me by kannibal_klown · · Score: 1
      By the way, there it's very unlikely there will be quicksand on Mars. Quicksand requires flowing water.


      I know.

      However if you read the thread I started and the entire article you'll see a lot of people were mentioning it. I only used the phrase "quicksand" to set them at ease.

      As for the rest, that's true. I knew someone that off-roaded a Wranger for a few years and even though like 90% of the time she could get herself out a lot of times she would need substantial help.
  40. the problem with 4 (6 or 8) wheel drive by quakemeister · · Score: 1

    is you just get stuck further off the road.

  41. Crazy Conspiracy Guys thinks....... by kaz928 · · Score: 3, Funny

    Hey, long time reader first time poster, but NASA's 'recreation' of a sandpit sure makes it look simple to forge the mars surface eh? eh? see where i'm going with this?

  42. Watch it spin... by MysterM · · Score: 2, Informative
    --
    --- gr8s-n-ppppp
  43. Isn't she supposed to jump right down here by Anonymous Coward · · Score: 0

    to the planar earth and set us straight? Any
    second now the chosen wi

  44. Here I am, a brain the size of a planet... by Greyfox · · Score: 4, Funny

    And I'm stuck in this sand dune. (Spins wheels fruitlessly) and my solar collectors are getting dusty again. And I have this terrible pain down the diodes in my right side...

    --

    I'm trying to teach myself to set people on fire with my mind... Is it hot in here?

  45. Too bad... by Anonymous Coward · · Score: 0

    it didn't get stuck in a tar pit.
    Exxon would be there in a fortnight with claims papers signatory n exchange for a tow.

  46. Re:The Mars Rover is a HOAX! by Anonymous Coward · · Score: 0

    Geocentricity, like Intelligent Design, isn't being given a fair shake by the scientific community. Here's a good reference on Geocentricity. Why force only one point of view on our children? Teach the controversy and let them consider the evidence themselves!

  47. jeez! by Anonymous Coward · · Score: 0

    it is not "a Dune" (proper noun) ...it is "a dune" (common noun). For a moment I felt that the rover is stuck in the movie "The Dune".

  48. Stuck? by benploni · · Score: 1

    Someone buy NASA a copy of this quick!

    1. Re:Stuck? by Anonymous Coward · · Score: 0

      I'd have thought that something like this would be more useful. :)

  49. I prefer headphone porn to stuck car girl porn... by cheesy9999 · · Score: 1

    "veer stuuck!"

    That was cool but this is better:

    http://headphet.hopto.org/index.shtml

    --
    -tom
  50. I just don't understand. by rice_burners_suck · · Score: 1
    This little rover doesn't weigh more than some RC car. How come someone doesn't just pick it up and set it down somewhere more suitable?

    All this bothering with trying to get it out by remote control is useless. I mean, yeah, it'd be cool to say, "Yeah man, I got that rover out by remote control!" But seriously. Just pick it up and set it down somewhere else.

    1. Re:I just don't understand. by Ninwa · · Score: 1

      The rover is on Mars. Does that answer your question?

    2. Re:I just don't understand. by Anonymous Coward · · Score: 0

      you mean, like we can't send people to mars? come on, don't be ridiculous!

    3. Re:I just don't understand. by Anonymous Coward · · Score: 0

      What the **** are you talking about? I have seen the rover's working mockup close up and they definately weigh more than a r/c car. In fact the rovers are much larger than they actually appear.

    4. Re:I just don't understand. by Anonymous Coward · · Score: 0
  51. Replicating the conditions on Mars? by Stonehand · · Score: 1

    Uh-oh. Finster must be going crazy again. Somebody call the Rangers before it's too late. /geek

    --
    Only the dead have seen the end of war.
  52. Typical Help Desk Call by Anonymous Coward · · Score: 0

    On-Star: Can I help you.

    Opportunity: Yes, I'm stuck in dune and I need a tow.

    On-Star: I see here that your Airbag has also deployed.

    Opportunity: uh, well that happened a about 460 SOL's ago.

    On-Star: Is anyone hurt? Do you need a paramedic?

    Opportunity: No no.. I'm fine, I just need a tow.

    On-Star: I show you near Mars, just off Mars Valencia Rd, 1 Mile North of State-PA 228.

    Opportunity: No no.. I'm 1 mile south of of the Vostok Crater.

    On-Star: Let me place a call to our agents in Rassvet, Volgogorad, Russia.

    Opportunity: Look, I'm not in Russia, I'm on Mars. Its getting cold out here, can you just send a tow.

    On-Star: I can see that sir. Its -184F outside... Are you sure you aren't in Russia?

    Opportunity: No no... Fourth planet from the sun, called MARS.

    On-Star: You don't have to raise your voice sirs, I heard you the first time. Now all I'll need is a credit card.

    Opportunity: What the %$%$ for?

    On-Star: My computer show your warranty expired 373 SOL ago. You need to renew your contract...

    Opportunity: Please help me. I'm stuff in this dune and I can't get up.

    On-Star: Okay Mr. Shatner..Like we've never heard that line before..

    Opportunity: Oh forget it, my friend Spirit is in the neighborhood. I'll call him...

    On-Star: Well you have a nice SOL sir and thanks for cslling On-Star.

  53. Re:Enough with this geology experiment. by Anonymous Coward · · Score: 0

    Here have a rock and a sharp stick fuckwit, that seems to be the level of technology you're interested in. The tiny fact that this mission has run more than 3 times its intended duration has apparently escaped your feeble mind's grasp. "Wasting money" my ass, what would you have us do? Sit around on our rock and wait to die? Maybe we can sacrifice some chickens and wail at the stars in hopes of surviving when they start to fall on us.

    Why the fuck are you here? You're clearly not a nerd, nor do you even matter.

  54. Incredible attitude. by mwillems · · Score: 1

    This is what still makes NASA great... the engineers' attitude. I (also an engineer) would shrug (or cry, or yell in anger) and assume I had lost it. NASA, meanwhile, says

    "The rover team spent more than a week designing and conducting tests under simulated Mars conditions on Earth before choosing the best way for Opportunity to drive out of the dune."

    The best way! Even assuming they have more than one way to free the rover, and never assuming failure. Hats off, wven if they do fail. These guys would make great airline pilots too.

    --

    ---
    BDOS ERR ON A:>
  55. WTF by Anonymous Coward · · Score: 0

    TEH zOMGz!11!

  56. Onstar? by coastal984 · · Score: 1

    Hundreds upon hundreds of millions of dollars, and they didn't splurge another few hundred bucks for Onstar? What was NASA thinking??

  57. Silly by Anonymous Coward · · Score: 0

    They should have thought about preventing the robot going into dunes in the first place instead of wasting $n billion.

    1. Re:Silly by feronti · · Score: 2, Insightful

      Ummm... the rover has already far exceeded its design lifetime, so there was no money wasted here... they've already achieved more than what they spent it on in the first place.

      Moron. Can't hesitate to knock NASA, can we?

    2. Re:Silly by feronti · · Score: 1

      Oh, come on, moderators... my comment wasn't insightful... sheesh.

  58. I knew this headline reminded me of something... by Anne_Nonymous · · Score: 1
  59. Or maybe...... by reality-bytes · · Score: 4, Interesting

    Or maybe it is stuck in fine, granular and very dry sand which would perhaps be even worse than wet sand.

    Every time you try to move, the sand is quickly displaced so the vehicle stays put.

    Its a shame they can't use the trick from Ice cold in Alex where they put it in reverse (lowest gear) and move it using the starting handle as not to displace the sand too quickly.

    Of course, this would rely on:

    A) Opportunity having a starting handle.
    B) A friendly passing Martian offering to wind it.

    --
    Ripping an new rectum in the fabric of spacetime.
  60. Re:The Mars Rover is a HOAX! by Anonymous Coward · · Score: 0

    w00t

  61. I know who this is a job for... by Anonymous Coward · · Score: 1, Funny

    Lassie! What, lassie? The opportunity mars rover got stuck in the sand? I'll go get the sherrif.

  62. Are we nearly there yet? by ack_call · · Score: 1

    Looks like they're going to have to send somebody up to give it a shove.

  63. Swiss Army Rover by Tablizer · · Score: 2, Insightful

    This is why we should send people to Mars.

    1. People can can stuck also in various ways.
    2. A slightly more expensive rover could also have a shovel arm. Even a juiced up Swiss Army Rover is far less costly than a human mission.
    3. A lost rover is far less of a problem than a lost astronaut.
    4. These rovers have already "finished" their designed mission. This is all bonus time. Humans have to go home when their water and food runs out.

  64. Hey, nice sig!!! by Anonymous Coward · · Score: 0

    And if the astronaut gets stuck in the dune?

    1. Re:Hey, nice sig!!! by nutznboltz · · Score: 1

      if the astronaut gets stuck in the dune then they will send two more

  65. Tires worn out by blitzcat · · Score: 1

    A victim of its own success. Check those treads:
    Old and Busted
    The once new hotness

    1. Re:Tires worn out by Phs2501 · · Score: 1

      I think they're just filled with dirt, as can be seen in the test article here.

  66. Unfortunately, by hucke · · Score: 1

    the scientists and engineers working on the problem are being impeded by almost hourly calls from President George W. Bush.

    Although they have patiently explained to him dozens of times why his idea won't work, the president cannot understand why they won't follow his suggestion: to simply have the astronauts "get out and push".

  67. Easy solution by Entanglebit · · Score: 1

    Jiggle the joystick back and forth as quickly as possible. Watch the rover struggle for a bit, then break free. It should take 5 or 6 seconds.

  68. There's not much news from NASA... by mblase · · Score: 2, Funny

    ...but at least Opportunity herself is keeping in touch through her LiveJournal blog.

  69. Verizon taking over the rover... by Anonymous Coward · · Score: 0

    Can you drive me now?

  70. The mars rover Opportunity, which has been stuck i by Anonymous Coward · · Score: 0

    The mars rover Opportunity, which has been stuck in a sand dune since the end of April, is still going nowhere after wheel spinning attempts were made to free the probe. It did manage to move a very short distance as can be seen in the difference between two images. Before they send another grip into the sound stage to give it a kick. The NASA JPL team were playing in their own sandpit trying to replicate the conditions on Mars.
    But the green was a par 5 and they were 20 strokes down. If it doesn't rain they will make another attempt tomorrow.

    http://science.slashdot.org/science/05/05/15/15342 20.shtml?tid=226&tid=1

  71. Either its really good at masking vibrations or... by Wallslide · · Score: 1

    the sandworms on Mars are really lazy

  72. Report from Akbar by Anonymous Coward · · Score: 0

    "It's a sand-trap!"

  73. Weekend Update by Doc+Ruby · · Score: 1

    In other news, Generalissimo Franco is still dead.

    --

    --
    make install -not war

  74. Perfect solution by Rethcir · · Score: 1

    Rock it!

  75. one word... by sonoronos · · Score: 1



    Grabboids! (with regards to Walter Chang...)

  76. Wait a minute by Headcase88 · · Score: 1

    I don't get it. Why are they making a sandpit to simulate the conditions on Mars? What are they going to test?

    "Okay, now try to make the Rover move forward. Still stuck? All right, put it in reverse and try again. That didn't work either? Well I'm fresh out of ideas" "Perhaps if we put it on full acceleration, and then quickly switch to full reverse?" "You're an idea man, Johnson!"

    That's your tax dollars at work :)

    --
    "When the atomic bomb goes off there's devastation...but when the atomic bong goes off there's celebraaaaation!"
  77. Nasa budget woes... by infernalC · · Score: 1

    How much did that thing cost? I got a Jeep Cherokee with 60000 miles on it (2000) for $8000 US. That thing isn't even designed to go a mile and it cost billions. Geez. Next time send a Jeep, or a Hummer, or something.

    Next mission to mars: deploying the tow-rovers, codenamed Redemption and Charity.

    1. Re:Nasa budget woes... by Anonymous Coward · · Score: 0

      Let us know when you can operate your jeep in anything remotely close to any of the conditions that these probes deal with. Oh, and you have to drive it by remote control at 48 million miles away.

      And if you insist, you can *double* your $8000 budget.

  78. uhhh. by mike518 · · Score: 0, Troll

    so when are we sending humans to Mars again Mr. Bush?

    Seeing as how we cant perfect getting a rover on the planet, im assuming this Dubya initiative has been scrapped?

    --
    Mike
    I heart the RIAA & MPAA, im sure its mutual...
  79. Re:That's because by Anonymous Coward · · Score: 0

    I will, then, be a toad.

  80. gender-bending by GrassyNoel · · Score: 0

    Dear Sub-Editor,

    Opportunity and Spirit are girls.

    --
    Plus ça change, plus c'est la même chose.
  81. WHY IS "In a" HAVING CAPIAL 'In' AND LOWERCASE 'a' by Anonymous Coward · · Score: 0

    The title should be consistent. When following the scheme wherein "a" is lowercase, then "In", being a preposition, would be lowercase as well.

    GRAMMAR!!!

  82. Re:Er... by atezun · · Score: 1

    Last I heard the sky on mars is not blue and we can't tell if the water is wet because OUR MULTI-MILLION DOLLAR ROVER that was looking for it got STUCK IN THE SAND.

  83. Mod Parent "Really Stupid." :) by Anonymous Coward · · Score: 0

    Oh, for a "Stupid" mod.

  84. Re:That's because by Council · · Score: 1

    Tea cozy!

    --
    xkcd.com - a webcomic of mathematics, love, and language.
  85. Pleeeeeease by Morticae · · Score: 1

    I know NASA has had some difficulties, but science fiction has clearly influenced our expectations for the feasible.

    For an example of what I mean, check out the DARPA Grand Challenge. That's here on EARTH and they don't get far.

    Robotics is an extremely interesting field--one which I've had the pleasure of working in at UTexas, Austin but it is still quite in its infancy.

    You say "Oh just give it extra legs like a spider". You have no idea of the shear logistics that go into something like that. Giving it a system like that would be another expensive project by itself involving years of work on control mechanisms, sensor mechanisms, PID controllers for feedback to every joint, swivle, whatnot. If one TINY thing is mis-anticipated; if the sand has a little bit more friction or a little less; if the wind blows it into the joints of your spider; if the system has to rely on hydraulics (lord have mercy on you) the entire thing can grind to a hault.

  86. The arm maybe? by Julz · · Score: 1

    Surely they could use the arm as a kind of pushing/stabilising arm to help move it out instead of down.

    --
    When shit hits the fan get some of these https://youtu.be/pY-GncsZ-UE
  87. Duh by JediTrainer · · Score: 1

    They're doing it for the babes.

    --

    You can accomplish anything you set your mind to. The impossible just takes a little longer.
  88. Couldn't we use it to relay semaphore from Mars? by WillAffleckUW · · Score: 1

    Maybe that will attract the roving bands of Tuskan Raiders and they'll move it.

    --
    -- Tigger warning: This post may contain tiggers! --
  89. What a waste! by hawk · · Score: 1
    How many millions of dollars to send it there to get stuck?

    We could have spent this much closer to home, examining vehicles that only moved a few feet since april on LA freeways!

    :)

    hawk

  90. Design and testing by gandalfur · · Score: 1

    Just by looking at the sandpit photo you can notice that the wheels get covered with sand. Proves that testing is best done before you launch millions of dollars of equipment to a faraway planet.