Slashdot Mirror


ESA Venus Mission Delayed

MrShaggy writes "The BBC is reporting that the ESA has announced that they have to hold the Venus Mission. According to the article, contamination is being blamed. From the article: 'Esa said the delay had been prompted by the discovery that insulation from the rocket launcher had contaminated the Venus Express spacecraft. "The satellite is contaminated, so they will have to dismantle and re-mount it again," a spokesperson for the space agency told the BBC News website.'"

18 of 75 comments (clear)

  1. At least they're doing it right. by CyricZ · · Score: 5, Insightful

    It's good to see that they're doing the right thing, regardless of the financial costs.

    --
    Cyric Zndovzny at your service.
  2. It'll tell us something about greenhouse gases by Cerdic · · Score: 5, Insightful

    From the article:

    Composed chiefly of carbon dioxide, Venus' atmosphere generates intense greenhouse warming, whereby trapped solar radiation heats the surface of the planet to an average of temperature of 467C.

    Experts think Venus could teach us more about how the Earth's climate will respond to the release of greenhouse gases resulting from human activities.


    It will tell us what many of us know - that putting too much CO2 into the atmosphere will heat up the planet. Unfortunately, those with real power to do anything about it will continue to aim for quick gains with little regard for the future.

    I know someone will respond about how the earth naturally spews CO2, but many of our processes that produce CO2 also produce pollutants such as CO, arsenic, and PCBs. These other pollutants are proven to be dangerous. Why does nobody (hello media?) ever mention that?

    --
    Advice for my fellow geeks: before seeking out that threesome you dream of, you might see what a TWOsome is like first.
    1. Re:It'll tell us something about greenhouse gases by cnettel · · Score: 3, Interesting
      Of course, nature is not all good. However, any statement regarding the natural emissions of CO2 also relates to the question of how different the levels in the biosphere (and atmosphere) have actually been and how it seems somewhat likely that, to some degree, this is an equilibrium system on Earth where, over time, a shift will cause other factors to counteract that shift.

      To me, this only means that the risk that we would be able to turn Earth into a Venus-like state is rather small. The problem just happens to be that (current) human cilization and activites are severly affected long before that. The current state of the climate might not be optimal, but many things rely on it. The worst thing is when that reliance on things being a certain way isn't even obvious to those most closely affected by any change, and/or those in power.

    2. Re:It'll tell us something about greenhouse gases by biryokumaru · · Score: 3, Interesting

      Actually, there is evidence concerning this very fact. The research is something like 10-15 years old (heck, I did a report on it in middle school ten years ago and it was old news).

      Here's some links, Google for more if you want:
      http://www.climateark.org/articles/1999/icecore2.h tm
      http://www.climateark.org/articles/1999/icecore2.h tm

      Here's some good images of analyses of the Vostok core samples from
      http://www.androidworld.com/prod60.htm - http://www.androidworld.com/Vostok_Ice_Core.jpg
      http://cdiac.esd.ornl.gov/trends/co2/vostok.htm - http://cdiac.esd.ornl.gov/trends/co2/graphics/vost ok.co2.gif

      Ultimately, the data is generally interpretted two ways.

      1. We're increasing faster than ever before, so it'll be worse than ever before.
      2. We're not increasing faster than ever before, thus so-called "global warming" is part of a natural cycle.

      Just thought I'd mention that =]. Personally, I think it's part of a normal cycle, and that it's pure egotism that humanity can think they're powerful enough to inadvertently destroy a massive ecosystem that has been in place for millions and millions of years. I mean, Australia isn't a whole lot worse off than it was when us Westerners got there, and most people say we really bungled that one.
      --
      When you're afraid to download music illegally in your own home, then the terrorists have won!
    3. Re:It'll tell us something about greenhouse gases by biryokumaru · · Score: 3, Informative

      You might be interested in a process known as "Global Dimming," which some claim as the cause of the equitorial African droughts for the past twenty years. I believe the Indian government funded a few projects concerning this effect.

      --
      When you're afraid to download music illegally in your own home, then the terrorists have won!
    4. Re:It'll tell us something about greenhouse gases by biryokumaru · · Score: 4, Insightful

      It is my (perhaps misguided) understanding that there are extremophiles and such which might likely be closely linked to our very most primordial ancestors. Were we to kill off all land-based life on earth, within them would lay enough evolutionary basis to rebuild the oxygen breathing world (over the course of a billion years, maybe). As you seem to be more well versed in this than I, could you confirm this as fact or fiction?

      Also, I think Australia is an excellent example. I do not know how long it normally takes humanity to destroy entire species, but we've fairly easily wiped out the dodo and the carrier pigeon. Australia is still teeming with life. It may be much unlike its previous design, but we haven't killed off the whole place. It's just found a new ecological balance, as I understand it. Is this incorrect? Are native species continuing to decline amongst the human-introduced predators?

      --
      When you're afraid to download music illegally in your own home, then the terrorists have won!
    5. Re:It'll tell us something about greenhouse gases by Tony+Hoyle · · Score: 2, Interesting

      It's a bit more complex than that... More pollution -> blocks sunlight slightly, lowers average temperature -> changes path of air currents slightly -> africa loses rainy season -> drought.

      If it was happening uniformly it wouldn't have any effect... however industrialised countries are pumping a lot of crap into the atmosphere, so they're experiencing dimming more than non-industrialised countries.

      This was also apparently a cause of the hot summers they've had in france that have killed several people (although they're french, so probably don't count).

      I was a little unconvinced by the argument this was mainly caused by aircraft though - yes, their trails probably do make a small difference to the surface temperature, but they're talking about a couple of degrees drop due to it... which would take a *lot* of aircraft.

  3. Re:It will never go by MrShaggy · · Score: 4, Funny

    I have a book. Men are from Mars, women are nuts.

    --
    I have mod points and I am not afraid to use them.
  4. More info at the wikipedia by Saiyine · · Score: 5, Informative


    Interestingly enough, the mission has a pretty complete wikipedia article.

    But even better are these pictures of the surface of Venus from the old Venera missions.

    --
    Hosting 20G hd, 1Tb bw! ssh $7.95
  5. What to do with all the Carbon Dioxide on Earth by NewKimAll · · Score: 2, Funny

    Well, we are thinking about building a Space Elevator, so we could get rid of some of it that way. I mean, Carbon Nanotubes requires Carbon afterall. Then once we build a couple (cuz, you know one won't be enough), we can extract even more Carbon from the Oceans and send it out into space.

    Then we could mine Iron asteroids and use the Carbon we sent from Earth to make steel. It could happen....

  6. Could somebody please explain by cr@ckwhore · · Score: 2, Interesting

    Is this an excercise in unnecessary cleanliness, or does the spacecraft actually cease to function normally when "contaminated"? What's the point? I never quite understood this aspect of big government space initiatives.

    --
    Skiers and Riders -- http://www.snowjournal.com
    1. Re:Could somebody please explain by amightywind · · Score: 4, Interesting

      I used to work at Hughes Space and Communications (now Boeing). All satellites used to undergo a vibration test on a giant paint shaker-like device. Ostensibly it was to verify that the satellite could handle vibrations during launch. The joke was on the factory floor that it was really to clean out screwdrivers and ham sandwiches left behind by the technicians who assembled the satellite. They actually put a white sheet under the rig to catch any parts that fell off.

      --
      an ill wind that blows no good
  7. Re:It's not just the CO2 by Vilim · · Score: 3, Informative

    No, it actually is because of CO2, http://en.wikipedia.org/wiki/Venus#Atmosphere.

    --
    History will be kind to me, for I intend to write it - Sir Winston Churchill
  8. right by Quadraginta · · Score: 2, Insightful

    Of course it won't. The atmosphere of Venus is 96% CO2 (Earth's is 0.03%). The solar flux is four times higher. There are no oceans on Venus, and indeed all the Venerian water seems to have vanished, possibly as a result of that increased solar flux. And finally, there is no biosphere, and we know the Earth's biosphere has a profound effect on its atmosphere (and vice versa).

    If the goal is understanding CO2 and climate change, the atmosphere to study is right over our heads (which saves a lot on shipping costs). Obviously any competent scientist knows this, and so none of them would be so silly as to propose spending umpty millions sending a few instruments to Venus to study global warming on Earth.

    I expect this little comment in TFA is a fanciful addition by the BBC to suit their own agenda. Pity they can't leave that agenda on the editorial page, however. It can make the scientists involved look like axe-grinding fools, which in turn makes it that much harder to convince undecided ordinary people to study the climate responsibly and seriously. With "friends" like the BBC, I'd say serious climatologists need no enemies.

  9. Uh... by NekoIncardine · · Score: 2, Funny

    Did anyone other than me think the (US's) Entertainment Software Association rather than the European Space Administration (name right?) when they first read this article? The Venus Mission... Sounds kinky when you're thinking games.

    --
    Omeg La. Rofl Leh.
  10. In other news... by Alias777 · · Score: 2, Funny

    A monstrously large bulge seems to have formed on the surface of Mars, largely consisting of Martian male strippers in pyramid fashion.

  11. Contamination has been identified by No2Gates · · Score: 2, Funny

    The contaminent has been put through a battery of tests and after careful analysis , it was determined to be a double shot decaf latte from Starbucks.

    --
    Every time you call tech support, a little kitten dies.
  12. ah so by Quadraginta · · Score: 2, Insightful

    No, journalists don't make it up out of thin air. Well, unless we're talking about fringe publications like The New York Times or The New Republic ...or, er, the BBC itself, come to think of it. But I digress.

    Anyway, if the reporter could have gotten one of the mission PIs or any prominent climatologist to voice this idea on the record, he would have. An anonymous "expert" can be anyone at all. It can be any random fool with a PhD, or the local high-school teacher, for all we know. The fact that he had to go with a limp and vague "people say..." tells you a lot, if you read between the lines a bit.

    Furthermore, he didn't quote his "experts," and this tells you a lot, too. Maybe he asked an expert whether this mission might return some data that gives some insight into Terrestrial global warming, however small, and the expert laughed and said "Sure! Anything's possible!" And there's your "expert opinion." Only, the reporter can't quote him precisely because it would clearly not be the same thing as Herr Professor Doktor furrowing his brow and saying "We MUST have zis mission or ze race is doomed, I tell you, DOOMED to boil in the fetid heat of its own emissions!" (Cue dramatic music...) Again, if the reporter could have gotten someone to make a definite strong statement ("The Venus Express will tell us what we can expect from global warming here on Earth, and that's important."), he would have done so and used it. Remember the Sherlock Holmes reflection on the dog that failed to bark in the night.

    As for the second part of your comment, sure, extra data is always helpful, if only marginally so. No doubt data from Venus isn't utterly worthless in terms of insight into Earth's atmosphere. No one's going to refuse to look at it, if they get it for free. But pay 220 million euros to get it??! That much bread will buy a lot of stratospheric balloon missions, or open-ocean buoys, or supercomputer simulation time, or experiments in the upper-atmosphere simulation chamber, or -- but you get the idea.