Slashdot Mirror


ISRO Makes History, Launches 104 Satellites With Single Rocket (indiatimes.com)

neo12 writes: Indian Space Research Organization (ISRO) made history by launching 104 satellites in a single launch. The lift-off of PSLVC 37 at 9.28 am from Sriharikota was a perfect one. In 28 minutes, all 104 satellites were successfully placed into the Earth's orbit. 101 of the 104 satellites belong to six foreign countries, including 96 from the U.S. and one each from Israel, the UAE, the Netherlands, Switzerland and Kazakhstan. According to Times of India, "Russian Space Agency held a record of launching 37 satellites in one go during its mission in June 2014. India previously launched 23 satellites in a single mission in June 2015."

158 comments

  1. An example for rest of the nation. by kamathln · · Score: 2, Insightful

    If only the rest of the nation was as effecient as ISRO!

    1. Re: An example for rest of the nation. by Anonymous Coward · · Score: 5, Funny

      Have you seen their train system? They have a much higher passenger to vehicle ratio.

    2. Re: An example for rest of the nation. by Anonymous Coward · · Score: 0

      In Seattle, single occupants get the entire bus to themselves.

    3. Re: An example for rest of the nation. by kavuri · · Score: 2

      In Seattle, single occupants get the entire bus to themselves.

      what a waste of resources

    4. Re: An example for rest of the nation. by Anonymous Coward · · Score: 0

      You don't understand, Seattle is a harbor for smelly indo-chimps (Monkeyshit Corp), you can only tolerate so much smell per bus.

    5. Re:An example for rest of the nation. by Anonymous Coward · · Score: 0

      They are. That rocket also sent over 104 H1Bs to take our jobs!

    6. Re:An example for rest of the nation. by Joce640k · · Score: 2

      Donald Trump will soon put a stop to this.

      96 American satellites had to be launched by a third world country? That doesn't make America look great.

      --
      No sig today...
    7. Re: An example for rest of the nation. by kelemvor4 · · Score: 1

      Have you seen their train system? They have a much higher passenger to vehicle ratio.

      https://s-media-cache-ak0.pini...

    8. Re:An example for rest of the nation. by Anonymous Coward · · Score: 0

      He didn't say he'd make America look great, he said he'd make 'America great again'.

      And I am sure he can learn more than you in 24 hours about launching satellites.

    9. Re:An example for rest of the nation. by Joce640k · · Score: 0

      I am sure he can learn more than you in 24 hours about launching satellites.

      His attention span is about 10 seconds. The idea of him spending 24 hours learning something is laughable.

      PS: Check his Twitter sometime. The idiot has over 34000 (thirty four thousand) tweets to his name. How is that even possible?

      https://twitter.com/realdonald...

      --
      No sig today...
    10. Re:An example for rest of the nation. by The-Ixian · · Score: 1

      How is that even possible?

      I am guessing that he has aides

      --
      My eyes reflect the stars and a smile lights up my face.
    11. Re: An example for rest of the nation. by FatdogHaiku · · Score: 1

      Have you seen their train system? They have a much higher passenger to vehicle ratio.

      https://s-media-cache-ak0.pini...

      OK. People that get scraped off before they reach their detestation don't count!

      --
      You have the right to remain sentient. If you give up the right to remain sentient, you will be elected to public office
    12. Re: An example for rest of the nation. by Anonymous Coward · · Score: 0

      The only thing he can do in 24 hours that I can't is pork Ivanka.

    13. Re: An example for rest of the nation. by Anonymous Coward · · Score: 0

      Now if only they learned how to use the toilet.

    14. Re: An example for rest of the nation. by SumDog · · Score: 1

      I ride the buses and train in Seattle, ever day. They're packed, every day. You have obviously never ridden one ever.

    15. Re: An example for rest of the nation. by IMightB · · Score: 1

      I don't think toilets as we know them exist in India... Toilets are just called Outside.

    16. Re:An example for rest of the nation. by angel'o'sphere · · Score: 1

      There are no third world or fourth world countries anymore since decades.
      There are only countries like Somalia where War Lords rule and make the life miserabel or third world like.

      --
      Cost free eBook I read (by iBook/Kobo/Amazon/ObookO/Gutenberg etc.): "The Green Odyssey" by Philip Jose Farmer.
    17. Re: An example for rest of the nation. by Anonymous Coward · · Score: 0

      Better than sitting next to a fat white momma with that stinky odour of deodorant and sweat.

    18. Re: An example for rest of the nation. by Anonymous Coward · · Score: 0

      This picture is from Bangladesh, not India.

      Indian trains look a bit like this: https://upload.wikimedia.org/wikipedia/commons/7/7e/WAP-7_class_electric_locomotive_of_Indian_Railways.jpg

    19. Re: An example for rest of the nation. by pslytely+psycho · · Score: 1

      Every bus system has routes that run nearly empty at the end of the day.
      He's just trying to use those few routes as a poorly constructed troll against the entire system.
      And yeah, he likely has never ridden one. That would just screw up his predetermined world view.

      --
      Donald Trump, on a crusade to make Nixon look respectable
    20. Re: An example for rest of the nation. by Anonymous Coward · · Score: 0

      I don't think toilets as we know them exist in India... Toilets are just called Outside.

      That's a very derogatory remark. but unfortunately true about many parts of rural India. However the current prime minister of India is putting great efforts in correcting this situation. Only if we take off our glasses...

    21. Re: An example for rest of the nation. by Anonymous Coward · · Score: 0

      The last time I went on a bus in Seattle, at the next stop a woman got on and sat down next to me. She was wearing a trash bag and smelled like the abstract concept of BO had died on a hot day and rotted, then came back into the world as her, pissed and shat itself without cleaning for 20-some years, and then got onto a bus.

    22. Re:An example for rest of the nation. by kamathln · · Score: 1

      I am from India. I am just saying rest of the nation (India) should follow on ISRO when it comes to efficiency)

    23. Re:An example for rest of the nation. by kamathln · · Score: 1

      Why do slashdotters think America is the only country which reads Slashdot?

    24. Re:An example for rest of the nation. by Coren22 · · Score: 1

      https://www.google.com/search?...

      Truly embarrassing, I guess we just voted out a third world dictator according to you.

      --
      APK likes to ask for responses to the same things over and over. Maybe he just likes the responses?
  2. Adding to space junk, satellite by satellite by hughbar · · Score: 4, Insightful

    This is great, technically speaking. However, here's a little article from the BBC on the current space junk problem: http://www.bbc.co.uk/news/scie... Just look at the statistics at the bottom of the article.

    We've managed to fill near-earth with almost as much rubbish as the surface, the actual atmosphere and (more recently reported) the depths of the sea: https://www.theguardian.com/en...

    I love tech, but we need urgently to work on its by-products.

    --
    On y va, qui mal y pense!
    1. Re:Adding to space junk, satellite by satellite by quenda · · Score: 4, Funny

      We've managed to fill near-earth with almost as much rubbish as the surface, ...

      Not been to India, have you?

    2. Re:Adding to space junk, satellite by satellite by Anonymous Coward · · Score: 0

      We've managed to fill near-earth with almost as much rubbish as the surface, ...

      Not been to India, have you?

      96 of those satellites are from US.

    3. Re:Adding to space junk, satellite by satellite by Anonymous Coward · · Score: 0

      One must know The Guardian is a propaganda media house.. Just like NY Times and Huffington Post. find the half glass empty in

    4. Re:Adding to space junk, satellite by satellite by ghoul · · Score: 1

      And with this comment you have contributed to junk in cyberspace

      --
      **Life is too short to be serious**
    5. Re:Adding to space junk, satellite by satellite by Anonymous Coward · · Score: 0

      I'm curious, what media source would you *not* dismiss as a propaganda media house? Breitbart?

  3. among the launched birds... by Anonymous Coward · · Score: 5, Interesting

    Among the foreign satellites, 88 cube satellites belonged to San Francisco-based earth imaging startup Planet. With the launch, the company has increased its fleet to 143 satellites which will soon begin capturing images of the earth's entire landmass, including India, every day.

    so, just another 88 spy satellites?

    yup.

    https://www.planet.com/markets...

    1. Re: among the launched birds... by Anonymous Coward · · Score: 0

      Sort of but it is not actually the government s that use it. It is actually invest banks and hedge funds.

      So you don't know how many iPhones is Apple selling? Why not just monitor the traffic at Foxconn from sapce and that gives you a very good idea, which you can then use to buy or sell stock in advance of the result announcements. Same thing applies to many other industries.

    2. Re: among the launched birds... by Anonymous Coward · · Score: 0

      it makes no difference WHO owns the birds, it's the fact the data is being collected and archived forever that is the problem. instead of a government keeping it to themselves, they're selling it to everybody with enough money (that leaves out you, me, and most people) to use and store however they please. all it takes is a secret letter for the government to access *everything* they have, just in case one of their own birds missed something.

    3. Re: among the launched birds... by Anonymous Coward · · Score: 0

      Yeah because Google, for example, never shares its data with the government.

    4. Re: among the launched birds... by SumterLiving · · Score: 1

      If you want your privacy, don't share anything, don't own anything and never, ever go outside when one of the evil satellites will be able to view you from above.

    5. Re:among the launched birds... by Solandri · · Score: 1

      These are cube sats, so they only produce images with a resolution of about 3-5 meters. Not really enough to make out cars on roads. The smallest recognizable object is about house-sized. Their imagery is of more interest to earth and atmospheric scientists.

      Resolution of a telescope is inversely proportional to the diameter of its optics. Spy satellite resolution is about 13 cm, or 5 inches - an ex-NRO official is on record stating that they could see how many plates you set out on a picnic table. To get that resolution, the primary optic needs to be about 2.4 meters in diameter.* Which not-so-coincidentally is the diameter of Hubble's primary mirror. Hubble's size was dictated by the Space Shuttle's cargo bay, and the cargo bay was designed to hold (among other things) a Keyhole spy satellite for launch, maintenance, and refueling. Hubble is basically a spy satellite pointed up instead of down.

      * Your primary optic doesn't have to be round. It's possible to create a larger synthetic aperture via an interferometer - two (or more) small mirrors separated by a large distance. You lose signal to noise ratio (which shouldn't be a problem for something brightly lit by sunlight), but gain resolution as if your optics were a mirror with the diameter of the separation between your small mirrors. I suspect newer spy satellites are of this design, giving them much higher resolution (the primary constraint would then be atmospheric turbulence). The unfurling mirror design of the James Webb Space Telescope relies on the same mechanics as would be needed for an interferometer spy satellite. This isn't really viable with cube satellites - the mirrors have to be aligned to within a fraction of a wavelength of light to create an interferometer, so a large rigid structure is crucial.

    6. Re: among the launched birds... by SharpFang · · Score: 1

      " (that leaves out you, me, and most people)" - well, until the nearest grand leak.
      Don't worry, it will happen sooner or later.

      --
      45 5F E1 04 22 CA 29 C4 93 3F 95 05 2B 79 2A B2
    7. Re: among the launched birds... by Plus1Entropy · · Score: 1

      And you couldn't monitor Foxconn from the ground, with say, binoculars or something?

      --
      Only crack the nuts that crack. You don't put the ones that don't crack in the sack.
    8. Re:among the launched birds... by onepoint · · Score: 1

      very interesting. Now let me just ask, cell phone camera's. Very very small, but I think I could mount a few 20 to 40 on a basic cube sat. which could be ridged. would that work as a basic concept? shoot up to the sky and act as a very big looking bug eye?

      --
      if you see me, smile and say hello.
  4. Not a space junk problem by dbIII · · Score: 5, Insightful

    Not a space junk problem:
    1/ They won't stay up for many years, they don't have the fuel to do it.
    2/ We know exactly where every one of them is, where they are going and can work out where they will be at any time for weeks ahead within a very small margin of error.

    Anything else you want cleared up? I'm no rocket scientist but I had a good one explain the pathetically easy stuff to me a few decades back.

    1. Re:Not a space junk problem by pslytely+psycho · · Score: 0

      A few decades back it wasn't nearly as bad either. Your info is decades out of date.

      --
      Donald Trump, on a crusade to make Nixon look respectable
    2. Re:Not a space junk problem by hughbar · · Score: 1

      Until we don't. And actually, we know the position of most of the pieces of space junk too. We just have no idea how to clear it: http://www.forbes.com/sites/ji...

      --
      On y va, qui mal y pense!
    3. Re:Not a space junk problem by dbIII · · Score: 1

      You linked to Forbes? Why not Playboy? Why not a Nintendo gaming magazine? Both would be more credible sources.

    4. Re:Not a space junk problem by dbIII · · Score: 1

      OK then - outline how those two points are incorrect.

    5. Re:Not a space junk problem by hackertourist · · Score: 1

      These satellites are at an altitude of 500 km, so it will take a few decades for their orbits to decay.

    6. Re:Not a space junk problem by Anonymous Coward · · Score: 0

      Not a space junk problem: 2/ We know exactly where every one of them is, where they are going and can work out where they will be at any time for weeks ahead within a very small margin of error.

      Yes, but that's 104 new objects that you have to include in your trajectory calculations....
      Space Junk.

    7. Re:Not a space junk problem by gman003 · · Score: 1

      Is that apogee or perigee altitude? I can't imagine these tiny satellites had enough propellant for a circularization burn, but I couldn't find any more detailed orbital parameters. A relatively elliptical orbit would have their orbit decay much faster.

    8. Re:Not a space junk problem by Anonymous Coward · · Score: 0

      Welcome to the world of written language, where in fact what someone says is more important than who says it. Except when it's you - what you say and who you are, both completely irrelevant.

    9. Re:Not a space junk problem by pslytely+psycho · · Score: 2

      The problem has grown considerably in a couple of decades, I didn't mean to imply it was incorrect, as we haven't yet had a problem, just that we are fast approaching the point where it will become a major problem for launches. It takes very little to critically damage a spaceship, especially at orbital speeds.

      NASA is taking it seriously.

      We currently track over 500,000 pieces of space debris. There are many times that amount of smaller, untrackable objects, to small to track, to large to shield against. It took 40 years to put 10,000 softball size objects into orbit, it took only 10 more to double that.

      There have fortunately only been a handful of collisions. But it does get more likely each year.

      I wasn't trolling you, merely pointing out the problem is much less simple than it was a couple of decades ago and getting worse, as much of it is in high orbits that take decades or longer to decay.
      I think you may enjoy these links.

      My sources:

      https://www.nasa.gov/mission_pages/station/news/orbital_debris.html

      https://www.orbitaldebris.jsc.nasa.gov/

      Very interesting reading. Have a good one dblll.

      --
      Donald Trump, on a crusade to make Nixon look respectable
    10. Re:Not a space junk problem by Anonymous Coward · · Score: 0

      Perhaps you don't realize HOW FUCKING BIG IT IS UP THERE.

      Saying CubeSats are junking up space is like saying a pebble falling off the back of a truck in Boise is really slowing down your commute in LA.

      Not to mention, Cubesats are at a fraction of the velocity necessary to maintain an orbit due to their low altitude within the Van Allen belts and return rather quickly, burning up 100% during reentry.

      Tl:DR You're a fucking idiot if you think cubesats with a 4-18month life in orbit are junking up spcae.

    11. Re:Not a space junk problem by Anonymous Coward · · Score: 0

      Bit of a cunt, aren't you.

    12. Re:Not a space junk problem by The-Ixian · · Score: 1

      I am not an orbital scientist or anything, but I am thinking that the space around our planet is pretty vast. I am guessing that every single man-made object orbiting earth wouldn't even fill the borders of a small town.

      And not everything orbits in the same plane.

      I am not saying that space junk isn't a potential problem but I am guessing that the chances of encountering one is pretty small even if we add 1000x more stuff.

      --
      My eyes reflect the stars and a smile lights up my face.
    13. Re:Not a space junk problem by AmiMoJo · · Score: 1

      That's fine until one gets hit by another bit of space debris, splitting into multiple warheads each with enough kinetic energy do put holes in other satellites.

      --
      const int one = 65536; (Silvermoon, Texture.cs)
      SJW, n: "Someone I don't like, and by the way I'm a fuckwit" - AC
    14. Re:Not a space junk problem by hackertourist · · Score: 1

      When NASA did the Hubble servicing missions, they brought some parts back to Earth for examination. They found hundreds of micrometeoroid hits. Most of them tiny (from e.g. flecks of paint), but at a speed difference measured in km/s even small particles are a big problem.

    15. Re:Not a space junk problem by angel'o'sphere · · Score: 1

      Well, if I get your name as a reference correctly, you should know better.
      Near earth space is full with junk, and that is a problem since decades.
      Of course it is not floating around at the same place ... that would be no problem. It is orbiting with extrmely high speeds at 'arbitrary' orbits intersecting with new objects we want to put up there.
      The chances to encaunter one is actually pretty high, not small.

      --
      Cost free eBook I read (by iBook/Kobo/Amazon/ObookO/Gutenberg etc.): "The Green Odyssey" by Philip Jose Farmer.
    16. Re:Not a space junk problem by dbIII · · Score: 1

      I didn't mean to imply it was incorrect

      Then you should not have attempted to link it with a completely different space junk problem.
      Your sources of course are factual but have nothing to do with what I wrote.

      These satellites in question have a very limited life before they deorbit. They hit enough gas in LEO that they are on the way down in a few years without enough propellant to keep them up to speed.

    17. Re:Not a space junk problem by dbIII · · Score: 1

      What it says in that Forbes article doesn't refute what I wrote, is not really even on the same topic and is dumbed down to uselessness as expected of Forbes.

    18. Re:Not a space junk problem by dbIII · · Score: 1

      Read the post by gman003 to lose that certainty (plus still wrong without extra propellant even if it's circular).

    19. Re:Not a space junk problem by Anonymous Coward · · Score: 0

      they're typically in "roughly" circular orbits .. maybe 505 apogee, 495 perigee kind of thing.. It's not a 200x600 swooping down into the ionosphere.

      For a 3U cubesat at 500km, in a 400x600 orbit, it will probably come down in 2-3 years. In a 500 km orbit, maybe 5 years. in a 600km orbit 20+ years.

    20. Re:Not a space junk problem by hackertourist · · Score: 1

      Cubesats are at a fraction of the velocity necessary to maintain an orbit

      um, no. They are exactly at orbital velocity or they wouldn't be in orbit at all.
      And their orbital decay has nothing to do with the Van Allen belts, but with atmospheric drag.

    21. Re:Not a space junk problem by pslytely+psycho · · Score: 1

      These satellites were launched into a heliosynchronous orbit according to the article. If the article is correct that means an orbit between 600 and 1000 km (372 to 621 miles). The ISS and the Hubble orbit much lower (400km/249m 568km/568m).
      So while these satellites cannot maintain those orbits, it will take decades for them to fall to earth.

      Most definitely contributing to the problem.

      I assume you were unaware of the characteristics of a polar sun synchronous orbit as you thought they would quickly re-enter due to lack of fuel.

      --
      Donald Trump, on a crusade to make Nixon look respectable
  5. Bring them on !!! by Anonymous Coward · · Score: 0, Insightful

    Bring on the usual cry babies !!!
    Oh wait...they are already whining and rolling-on-the-floor ... LOL.

    1. Re:Bring them on !!! by Anonymous Coward · · Score: 0

      Bring on the usual cry babies !!! Oh wait...they are already whining and rolling-on-the-floor ... LOL.

      LOL. I wish I had mod points.

    2. Re:Bring them on !!! by pslytely+psycho · · Score: 1

      Ah, the new normal. Make a small minded insult and get modded insightful.

      The only thing insightful about this comment is we get to see just how small, insecure and partisan this AC is.

      We are living the old curse:
      May you live in interesting times.....

      --
      Donald Trump, on a crusade to make Nixon look respectable
  6. 96 satellites from the US alone by Anonymous Coward · · Score: 0

    What is this? Some kind of a reverse H1-B program??

  7. Not one positve comment! by Anonymous Coward · · Score: 1

    Its a new low for /. community!

  8. Fantastic achievement by ISRO by kavuri · · Score: 2

    Awesome achievement. Trying to imagine the kind of brains behind this feat given the meager financial resources they have to deal with

    1. Re:Fantastic achievement by ISRO by Anonymous Coward · · Score: 0

      UK resident,
      Makes me wonder why we pay india millions in aid, yet they have a vibrant space program but we cant afford one of our own....

    2. Re:Fantastic achievement by ISRO by kavuri · · Score: 1

      Wakeup call UK to end financial aid to India by 2015 - http://www.bbc.com/news/uk-pol...

    3. Re:Fantastic achievement by ISRO by Anonymous Coward · · Score: 1

      UK resident, Makes me wonder why we pay india millions in aid

      Because UK looted by the billions from India for 400 years?

    4. Re:Fantastic achievement by ISRO by Anonymous Coward · · Score: 0

      It is unlikely that so called "aid" will be stopped. Aid is typically used to undermine countries, influence their leadership in a bad way and commit other nefarious activities. One reason why India recently kicked out a number of aid agencies.
      Read "Confessions of an economic hit man" by John Perkins to find out the real purpose of aid.

    5. Re: Fantastic achievement by ISRO by Anonymous Coward · · Score: 0

      So we can still pretend we're a global power. Look on it as an investment: twenty years from now, India will be sending us aid.

    6. Re:Fantastic achievement by ISRO by Gavagai80 · · Score: 4, Insightful

      The UK "civilized" India by taking what had been the largest, most thriving economy on the planet with thousands of years of rich culture admired by Europeans, and turning it into a poverty-stricken corrupt backwater?

      --
      This space intentionally left blank
    7. Re:Fantastic achievement by ISRO by SharpFang · · Score: 1

      That's like calling raping native women "enrichment of the populace's genetic pool".

      --
      45 5F E1 04 22 CA 29 C4 93 3F 95 05 2B 79 2A B2
    8. Re:Fantastic achievement by ISRO by ColdWetDog · · Score: 1

      You might say they civilized them, to the extent possible.

      For various weird definitions of 'civilization'.

      Warm Beer.
      Chutney.
      Cricket.
      Driving on the wrong side of the road (although this appears to be optional, like all motor vehicle laws).

      --
      Faster! Faster! Faster would be better!
    9. Re:Fantastic achievement by ISRO by Anonymous Coward · · Score: 0

      I find the India Pale Ale style to be the most unfortunate outcome of the India occupation. It lacks balance, and is vile. The flavor of British ales flourishes at cellar temperature. So that is a good thing.

    10. Re:Fantastic achievement by ISRO by Anonymous Coward · · Score: 0

      What else would you call it?

    11. Re:Fantastic achievement by ISRO by Anonymous Coward · · Score: 0

      The UK should take itâ(TM)s paltry aid shove it up itâ(TM)s ass as asked by the Indians in 2012 http://www.telegraph.co.uk/new... very recently India offered Afghanistan $1 bn in fresh aid https://tribune.com.pk/story/1... India has massive problems but itâ(TM)s not like it is begging the Brits and it is making massive progress by itself..

    12. Re:Fantastic achievement by ISRO by Anonymous Coward · · Score: 0

      You're a funny guy.

    13. Re:Fantastic achievement by ISRO by Anonymous Coward · · Score: 0

      India squandered everything left for free by the British

    14. Re:Fantastic achievement by ISRO by Anonymous Coward · · Score: 0

      Most people would call it rape.

    15. Re:Fantastic achievement by ISRO by Anonymous Coward · · Score: 0

      The Indian Space program, like most other space programs, gets a large chunk (if not the major portion) of their funding from the clients they launch satellites for. If you think this money is being misallocated, don't blame the government of India, blame all those private companies that want to invest more in cubesats instead of people in other countries.

    16. Re:Fantastic achievement by ISRO by asvravi · · Score: 1

      A British journalist had asked Mahatma Gandhi: "What do you think of western civilization?"
      Gandhi: "I think it is a good idea"

  9. North Korea by Anonymous Coward · · Score: 0

    Reminds me when North Korea threatened to launch 10000 tungsten carbide ball bearings. Would it really be a big deal?

    1. Re:North Korea by SharpFang · · Score: 2

      Depends on orbit, but yes, look up Kessler Syndrome.

      --
      45 5F E1 04 22 CA 29 C4 93 3F 95 05 2B 79 2A B2
    2. Re:North Korea by onepoint · · Score: 1

      I've really looked at this problem, couple of issues came up
      A) Why did they choose Tungsten Carbide instead of Eglin steel. just does not seem as effective
      B) unless the design is conical in nature, 30% of Ball bearings are going towards earth ( could be a lot more if it's a ball design or tube design )
      C) in any case, upon a Kessler Syndrome happening, space exploration would stop for 25 to 50 years unless someone comes up with a way to clean up space ( maybe a world wide concerted effort with lasers to clear a basic launch path. )

      so the next step is for someone to create the clean up device.

      --
      if you see me, smile and say hello.
    3. Re:North Korea by SharpFang · · Score: 1

      A) prolly propaganda reasons.

      B) depends on deployment mechanism. Imagine a charge shooting the payload like a shotgun in prograde direction. Most of the balls will not descend considerably.

      C) it certainly is slowed down a lot and made much more risky. We're not sure about full extent of consequences.

      --
      45 5F E1 04 22 CA 29 C4 93 3F 95 05 2B 79 2A B2
  10. truly the "Money Shot" by Anonymous Coward · · Score: 0

    At 104 satellites, they definitively "shot their wad" on this one.

  11. Re: Indians celebrate in the streets...... by Anonymous Coward · · Score: 0

    Stfu ignorant bastard

  12. Re:Indians celebrate in the streets...... by Anonymous Coward · · Score: 0

    They are in full festival mode: India celebrates space shot.

  13. Well done!! by manojkg · · Score: 2

    Congratulations team !! .... Well done

  14. An another big history by India by sandipsing465 · · Score: 1

    It's another big history for India by launching 104 satellites through 1 rocket. Congrats to all the ISRO team for their efforts on the successful launch.

    1. Re:An another big history by India by Anonymous Coward · · Score: 0

      It's another big history for India by launching 104 satellites through 1 rocket.

      Please don't post on an English unless you can write using it competently. India is a dumpster fire.

    2. Re:An another big history by India by Anonymous Coward · · Score: 0

      Please don't post on an English? Perhaps you should follow your own advice.

  15. Both UAE and Israel in same launch? by luvirini · · Score: 1

    The Indians may have "forgotten" to tell the launch customers in those two countries about that..

    1. Re:Both UAE and Israel in same launch? by Anonymous Coward · · Score: 0

      There is an Israel Consulate in the UAE.

    2. Re:Both UAE and Israel in same launch? by Anonymous Coward · · Score: 0

      Israel should be prevented from launching anything until they give back Palestine.

    3. Re:Both UAE and Israel in same launch? by Anonymous Coward · · Score: 0

      The UAE should be prevented from launching anything until they give basic human rights to women instead of treating them like property.

    4. Re:Both UAE and Israel in same launch? by Anonymous Coward · · Score: 0

      There is no Palestine. Only the ancient kingdoms of Judea and Samara, which belong to Israel by right. Jews and Christians cannot allow the Arabs to control the holy sites. Israel rules.

    5. Re: Both UAE and Israel in same launch? by Anonymous Coward · · Score: 0

      The Canaanites, Moabites, Hittites, and Philistines are glad to be back.

  16. Tracking 104 pieces in space by Wowsers · · Score: 1

    104 new pieces of space junk to track.

    --
    Take Nobody's Word For It.
  17. yu0 f4il i7 n00b by Anonymous Coward · · Score: 0

    Israel and the Gulf monarchies are very very good friends.
    Evidence for that is everywhere... I'll get you started with this question:
    How many terrorist attacks has ISIS carried out against Israelis?
    capcha: reinsert

    1. Re:yu0 f4il i7 n00b by SharpFang · · Score: 1

      I don't think the Gulf monarchies have all that much influence over ISIS.

      The lack of recent successful terrorist attacks in Israel is the result of an their absolutely paranoid security levels.

      --
      45 5F E1 04 22 CA 29 C4 93 3F 95 05 2B 79 2A B2
    2. Re:yu0 f4il i7 n00b by RevDisk · · Score: 1

      Not that I'm entirely biased towards Israel (they don't treat non-terrorist Palestinians the best), but I don't think it's exactly "paranoid" when all of your neighbors have tried to kill you at least once. In most cases, several times. And have one or two terrorist attacks in addition to full out wars. And a couple countries routinely chant death to their entire country, possibly all the inhabitants as well. Though I hear the Iranian President is trying to get "Death to Israel" labels removed from their ballistic missiles.

      At some point, "absolutely paranoid security levels" become "probably appropriate, but could be more tactful about it especially when dealing with not involved third parties".

  18. Well done India by Chrisq · · Score: 1

    Bahaut acha hen

  19. Re: Indians celebrate in the streets...... by Anonymous Coward · · Score: 0

    Fucking SOB troll doll ...soon he and his band of brothers will roll off the cliff...
    peace !

  20. Only for three to five years until they deorbit by raymorris · · Score: 2

    88 of the satellites are in an orbit less than 500KM altitude. Due to drag from the thermosphere, they'll gradually slow down and fall to a lower altitude. They'll break up and burn up at about 80KM three to five years from now.

  21. Their train system by Anonymous Coward · · Score: 0

    Search 'train electrocution' on youtube for the risks of a high passenger ratio.

  22. * AT LEAST 88 of them, probably all by raymorris · · Score: 1

    I should have said AT LEAST 88 of them are in the low orbit. The rest of them probably are as well. So no real problem of creating space junk here. They'll be gone in about five years.

    1. Re:* AT LEAST 88 of them, probably all by Anonymous Coward · · Score: 0

      Three to five years if they're extremely lucky. We've noticed increased drag as high as 250km and have seen ISS deployments from NanoRacks last as short as 4-9 months.

    2. Re:* AT LEAST 88 of them, probably all by SharpFang · · Score: 1

      No *current* problem. But a risk.

      Every satellite can fail, and get out of control. The more satellites, the higher the chance.

      As two satellites crash, they create thousands of tiny debris of space junk - that can crash in other satellites creating more space junk. Some of that junk will be sent into higher orbits (due to energy of the crash), endangering other satellites and creating more space junk that will take longer to decay...

      We're not far from the Kessler Syndrome. I don't mind a launch that delivers one or five good 1-ton satellites. But the hundreds of cubesats give me creeps.

      --
      45 5F E1 04 22 CA 29 C4 93 3F 95 05 2B 79 2A B2
    3. Re:* AT LEAST 88 of them, probably all by Plus1Entropy · · Score: 1

      I'd be curious to see the worst case of how much delta-v can be induced into a piece of debris during a collision. Are we talking a apogee change of 1km? 10km? 100km? Even if we assume that 100% of the momentum shift is along the prograde vector..

      We're not far from the Kessler Syndrome. I don't mind a launch that delivers one or five good 1-ton satellites. But the hundreds of cubesats give me creeps.

      Since Kessler Syndrome is based on the exponential growth of the number of collisions (and the positive feedback loop of collisions -> debris -> more collisions), it doesn't really matter how many more satellites we put up there. Eventually, we'll end up in effectively the same place. Kessler syndrome is bound to happen, it's just a matter of when and whether we can effectively deal with it. The only caveat is if we can manage to come up with some kind of effective garbage collection method.

      --
      Only crack the nuts that crack. You don't put the ones that don't crack in the sack.
    4. Re:* AT LEAST 88 of them, probably all by SharpFang · · Score: 1

      At perpendicular collision, the max speed change would be sqrt(2) of the original... or exactly the Earth escape speed. So no orbit around Earth would be safe.

      --
      45 5F E1 04 22 CA 29 C4 93 3F 95 05 2B 79 2A B2
    5. Re:* AT LEAST 88 of them, probably all by SharpFang · · Score: 1

      Also - don't neglect natural decay. Kessler syndrome depends on density (number) of satellites+debris in orbit. The number is naturally falling as orbits decay - and grows with new deployments and/or crashes.

      --
      45 5F E1 04 22 CA 29 C4 93 3F 95 05 2B 79 2A B2
    6. Re:* AT LEAST 88 of them, probably all by Plus1Entropy · · Score: 1

      This assumes both objects are of the same mass, both are traveling at the same speed, that the collision is perfectly elastic, that one object transfers 100% of it's momentum into the other (i.e. it is motionless after the collision), and that none of the momentum is transferred into rotational motion.

      That is a lot of assumptions even accepting the premise that 2 objects collide perpendicularly, with both objects traveling at orbital speeds, which is pretty unlikely. I guess if two objects with a 90deg inclination between them crossed orbits at exactly the same time.

      --
      Only crack the nuts that crack. You don't put the ones that don't crack in the sack.
    7. Re:* AT LEAST 88 of them, probably all by SharpFang · · Score: 1

      It's a good rough estimate. A very small number of shards will move a little faster than that, most will move slower. This is the max any considerable number of shards can reach.

      These new satellites are in polar orbit, so collision with (not all that uncommon) equatorial orbit satellites will be perpendicular. And ALL objects in orbit are traveling at orbital speed or very close to it, so is that really what you meant?

      --
      45 5F E1 04 22 CA 29 C4 93 3F 95 05 2B 79 2A B2
    8. Re:* AT LEAST 88 of them, probably all by Plus1Entropy · · Score: 1

      I meant relative to each other.

      --
      Only crack the nuts that crack. You don't put the ones that don't crack in the sack.
    9. Re:* AT LEAST 88 of them, probably all by SharpFang · · Score: 1

      http://space.stackexchange.com...

      actual collision that happened, near-perpendicular. No detectable shards on escape trajectory, but quite a few in a considerably higher orbit.

      --
      45 5F E1 04 22 CA 29 C4 93 3F 95 05 2B 79 2A B2
    10. Re:* AT LEAST 88 of them, probably all by Plus1Entropy · · Score: 1

      The first answer is pretty interesting:

      With the satellites in LEO, relatively few debris will end up with velocity higher than at the impact moment, while moving at roughly similar trajectory as initially. That means most debris scattered in random directions would enter elliptical orbits with velocity roughly similar to initial at the point of impact. And that means apoapsis going significantly up, and periapsis - down. And lowering the periapsis significantly in LEO means one thing: reentry.

      About all the debris that were knocked out of circular orbits, by the time of two revolutions later were already burned up, whether going directly down from the impact, or going up towards the new apoapsis, and then heading down almost a revolution later.

      --
      Only crack the nuts that crack. You don't put the ones that don't crack in the sack.
    11. Re:* AT LEAST 88 of them, probably all by SharpFang · · Score: 1

      While that's all true, A LOT of debris don't end up in random stable orbits everywhere. A tiny percentage of the total, but still a large number, simply due to the absolutely massive total.

      The crash literally produces millions of pieces. Metal splashes droplets everywhere. Solar panels turn to shards. Electronics scattered in tiny pieces. All these can cause damage to other satellites and produce more debris. And even if 0.5% of them end up in a moderately higher orbit, once you have full-scale Kessler syndrome at one orbital altitude, it's only a matter of time until it spreads to all of them.

      --
      45 5F E1 04 22 CA 29 C4 93 3F 95 05 2B 79 2A B2
  23. Bravo, India! by OneHundredAndTen · · Score: 1

    Now that you have won the latest pissing contest, why not devote at least some funds to improving the lives of the more than 600 million Indian citizens who lack running water, electricity and sewage? Just a thought, you know, so that the rest of the world will stop thinking that you have a big huge chip on your shoulder.

    1. Re:Bravo, India! by ghoul · · Score: 1

      India is a capitalist democracy. The 600 million are given a chance to succeed in a free market. If they dont its not the govts job to make sure losers succeed.
      India is not being run by DOnald Trump.

      --
      **Life is too short to be serious**
    2. Re:Bravo, India! by Plus1Entropy · · Score: 1

      This is not a pissing contest.

      Do you think that the ISRO launched these for free? They nearly tripled the previous record of the number of satellites in a single launch. It was probably, by far, the cheapest per-satellite launch cost ever. This will potentially have a huge net-benefit for the Indian economy, as other countries and companies flock to them for future launches.

      Also, something not noted in TFS (but in TFA): these satellites were launched into a polar orbit, which requires significantly more delta-v, due to the fact that you can't use the momentum from the Earth's rotation to your benefit.

      --
      Only crack the nuts that crack. You don't put the ones that don't crack in the sack.
    3. Re:Bravo, India! by Anonymous Coward · · Score: 0

      Right after US fixes the lead in their water in Flint, MI. Why would a country like US not fix a drinking water contamination that was caused by state government.

    4. Re:Bravo, India! by Anonymous Coward · · Score: 0

      Yes, that is happening too. I do not see the the US suspending NASA and focusing all revenue on expanding Medicaid for all citizens instead. As the economy grows, progress happens but that does not mean that technological advancement is paused to focus on emancipating the poor first. And btw, this is not a pissing contest, this is a market, and ISRO has proven that it can launch satellites better and cheaper than any other country, and the revenue from this makes ISRO less dependent on federal grants, which frees up federal money for other initiatives.

  24. Americans littering again by Thud457 · · Score: 1

    96 of the cubesats in that clown car in space are American.
    Tragedy of the commons all over again.

    --

    the preceding comment is my own and in no way reflects the opinion of the Joint Chiefs of Staff

  25. Why so negative? by qaqa · · Score: 5, Insightful

    Whenever there's a story / discussion involving India, comments on Slashdot are almost always overwhelmingly negative with "ad-hominem" attacks all around. For example, this discussion thread does not have a single comment discussing the technical aspects of the launch - a launch of 100+ satellites is bound to have some interesting technical challenges which can be discussed. Instead comments are lame jokes about H1Bs and comments on how India shouldn't spend money on space missions. Slashdot was supposed to be a "news for nerds" site, where the nerds can actually discuss technology. It's sad to see what it has degenerated into.

    1. Re:Why so negative? by The-Ixian · · Score: 1

      ad-hominem attacks help make America great again...

      --
      My eyes reflect the stars and a smile lights up my face.
    2. Re: Why so negative? by Anonymous Coward · · Score: 0

      I blame the younger, spouting-ebin-memes, 4chan crowd. They are truly a lost generation

    3. Re:Why so negative? by Anonymous Coward · · Score: 0

      Somewhat agreed...

      What the US and EU have lost is the challenge of tackling scale. We develop precision, but unscalable, limited tech nowadays. Scalable tech is now developed in other countries, i.e computers and phones for instance.

      Sure companies like Apple designs and develops, but doesn't produce. Both are challenging problems. But I think the scale problem is harder, and more important (it's the source of tech adoption). For example: one has to ask which is harder and more beneficial: a one of 100 watches precise down to the 1/1000000 of a second or mass producing 1000000 watches that work for a lifetime? Just the former provides consumers with exclusivity rights.... and that will last only so long.

      As for scale, look at Ehang, they just flew 1000 drones they are tackling the scale problem, and eventually will get the exclusivity reins.

    4. Re: Why so negative? by Anonymous Coward · · Score: 0

      Wow, another attack. I guess you weren't at all interested in this kind of technology when you were young? Or do you really think the cool site to hang around on for "those" people is Slashdot all of a sudden?

    5. Re:Why so negative? by Anonymous Coward · · Score: 0

      "ad-hominem" attacks? LOL. You mean, racist attacks?

    6. Re:Why so negative? by Anonymous Coward · · Score: 0

      It is very unfortunate. Americans are losing their job because it is their problem. Instead of blaming others wasting time, they should better concentrate on studies and research and better make America and world great again.

    7. Re:Why so negative? by Anonymous Coward · · Score: 0

      Whenever there's a story / discussion involving India, comments on Slashdot are almost always overwhelmingly negative with "ad-hominem" attacks all around.

      What you are witnessing is unfiltered garbage. Wait a few days for the moderation to settle in and then read the +2 or higher comments. You will have your beautiful and serene Slashdot experience after all is said and done.

      Good luck and happy reading!

  26. No Love for ELaNa 4? by Anonymous Coward · · Score: 0

    There were 29 cubesats and a primary payload on that mission in 2013, all off a Minotaur-1.

  27. Can you clear this up? by Anonymous Coward · · Score: 0

    Yes, actually. I have two questions:

    1) Why do you have to act like such a dick, just because you know something that other people don't?
    2) When this "rocket scientist" explained it to you, did he act like a douchebag about it by belittling you for not knowing the answer to this pathetically simple problem?

  28. Re:That's not the reason he's upset. by hackwrench · · Score: 1

    I myself am tired of people who point to things they don't understand and state with certainty that it supports their unfounded conclusions when they do nothing of the sort. This goes way beyond simply not knowing something.

  29. 1 in 5 Cubesats Violates International Orbit Dispo by Traf-O-Data-Hater · · Score: 1

    This article is interesting reading: 1 in 5 Cubesats Violates International Orbit Disposal Guidelines http://spacenews.com/1-in-5-cu...

  30. Re:That's not the reason he's upset. by dbIII · · Score: 1

    Fair enough then, please point out the errors that I made with those two points.
    That is far more productive than grumbling and saying I "don't understand".
    Tell me what I do not understand and what the real answer is.
    I am an engineer not a rocket scientist so I could be wrong even on something so trivialially simple. Am I? How do you know?

  31. Re:That's not the reason he's upset. by hackwrench · · Score: 1

    No, you are the upset person. The AC was saying that you were rude in saying that the stuff was pathetically easy.

  32. Re:That's not the reason he's upset. by dbIII · · Score: 1

    With the greatest possible respect, since I'm sure you are good at something, most children over ten with access to a television in the Apollo era could have told you exactly what I had written.

  33. Re:You still misunderstand me by hackwrench · · Score: 1

    I was defending your ire.

  34. diffraction limit isn't by Anonymous Coward · · Score: 0

    Your statement about resolution vs diameter of optics is only true for a single image captured at a single time, where diffraction limiting is in play. Take a number of images from slightly different places, or with changing atmospheric propagation (turbulence) and you can do things like blind deconvolution and back propagation to substantially increase the resolution. Each image in the set provides a statistically independent look where each pixel of the image is essentially the linear combination of a bunch of smaller pixels in the ultimate image. Since each image you capture is different combinations of different pixels, if you can calculate what the changes are, you can figure out what the finer resolution pixel values are. Since you're typically looking for edges, looking for step functions is a good way to adaptively figure out the values.

          This has been used to, for instance, image the ISS or Shuttle with a relatively small telescope on the ground using a video camera.

    It's also akin to using an array sensor to get "sub pixel" position for a spot on the array by centroiding.

  35. Re:You still misunderstand me by dbIII · · Score: 1

    Sorry about that Chief.

  36. Racist comments by Anonymous Coward · · Score: 0

    Its quite amazing how /. is flooded with racist comments on every post related to India. If you feel Indians or whoever are taking your jobs, stop electing the same ideology to government over and over again. Stop electing frauds,liars, war mongers and thieves( or some combination of the above)to power in each and every election.

  37. Re:You still misunderstand me by Anonymous Coward · · Score: 0

    Wow. It's always funny when you can get a couple of cocky douchebags to argue with each other about how smart they feel everyone else should be.

    Think about how many people here weren't born before 1962.

    And think of the most effective teachers you had throughout your lifetimes. You were their student and you were learning from them. Did they act like pissy little cunts about it? After all, you should have simply been able to go to the library and look up the information yourself, right? Surely they were most effective when they belittled you for not knowing something,

    Assholes.

  38. Re:Whatever by hackwrench · · Score: 1

    Well they might have shown some attitude when a student acted like they were so sure about something and used examples that didn't support their wild assertions like the previous post just did, but you are ignoring what that post did for your narrative. Not only that, you are also completely clueless about the exchange between me and the other person. We weren't arguing about how smart we think everyone else should be. I defended his ire, but he thought I was attacking his stance and the exchange was to clear that up.