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Philae Lands Successfully On Comet

The European Space Agency has confirmed that the Philae probe has successfully landed on the comet 67P/Churyumov–Gerasimenko and established contact with headquarters. The harpoons have deployed and reeled in the slack, and the landing gear has retracted. (Edit: They're now saying the harpoons didn't fire after all.) There are no photos from the surface yet, but the Rosetta probe snapped this picture of Philae after initial separation, and Philae took this picture of Rosetta. Emily Lakdawalla has a timeline of the operation (cached). She notes that there was a problem with the gas thruster mounted on top of the lander. The purpose of the thruster was to keep the lander on the comet after landing, since there was a very real possibility that it could bounce off. (The comet's local gravity is only about 10^-3 m/s^2.) The pins that were supposed to puncture the wax seal on the jet were unable to do so for reasons unknown. Still, the jet did not seem to be necessary. The official ESA Rosetta site will be continually updating as more data comes back.

18 of 188 comments (clear)

  1. Congratulations! by QuietLagoon · · Score: 5, Insightful
    Congratulations to the European Space Agency!

    .
    10 years and 317 million miles.

    1. Re:Congratulations! by Frederic54 · · Score: 5, Funny

      > 10 years and 510 million km

      FTFY

      --
      "Science will win because it works." - Stephen Hawking
    2. Re:Congratulations! by weilawei · · Score: 5, Funny

      Jeez people, watch your units!

      260.7 fortnights and 2.535x10^9 furlongs

      FTFY.

    3. Re:Congratulations! by soccerisgod · · Score: 5, Informative

      The mission in it's entirety, including the planning stage, took around 25 years. Or so they said during the post-landing press conference.

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      If a train station is a place where a train stops, what's a workstation?
  2. Hold on by zerosomething · · Score: 4, Informative

    Harpoon did not fire. https://twitter.com/esaoperati...

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    1. Re:Hold on by amicusNYCL · · Score: 4, Informative

      That's what I thought. About 15 minutes ago on the live feed they had someone in the control room say that the harpoons did not fire and that Philae was not anchored to the comet. Hopefully they get it anchored, and hopefully they already got a couple pictures from the descent and landing.

      --
      "Our two-party system is like a bowl of shit looking at itself in a mirror." - Lewis Black
    2. Re:Hold on by avgjoe62 · · Score: 5, Funny

      Harpoon did not fire

      I understand that a Greenpeace boat got in the way...

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  3. Re:second picture by smooth+wombat · · Score: 5, Informative

    The second picture was taken from the probe itself after it detached. According to the ongoing conference, the picture was taken exactly (their words) 50 seconds after the probe was released.

    The Sun is the bright spot in lower middle. Rosetta itself is in the upper right. Because the probe was spinning when released, there is a slight blurring of the picture.

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    We will bankrupt ourselves in the vain search for absolute security. -- Dwight D. Eisenhower
  4. second picture by j-b0y · · Score: 4, Informative

    Rosetta solar panels at the top of the image, with the main body of the probe top right. The sun was causing lots of straylight in the image and it was quite saturated, so they had to do some major fix-up work to get anything sensible, hence the wierdness that you see on the left hand side.

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  5. Re:second picture by gstoddart · · Score: 4, Insightful

    Is your phone over 10 years old and just traveled millions of miles through space?

    No, it isn't.

    This will be, what, 14-15 year old tech by now?

    Do let us know when you get your iPhone to a comet and can send back pictures with it. Then we might be impressed.

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    Lost at C:>. Found at C.
  6. Re:second picture by ColdWetDog · · Score: 5, Funny

    Didn't realize that J.J. Abrams was involved in this project.

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    Faster! Faster! Faster would be better!
  7. Re:second picture by MooseTick · · Score: 4, Funny

    "Is your phone over 10 years old and just traveled millions of miles through space?"

    Hasn't everything on Earth traveled "millions of miles through space" in the last 10 years?

  8. Not bad. . . by smooth+wombat · · Score: 4, Interesting

    for a government run operation.

    Congrats to everyone at ESA, especially to all the people behind the scenes you never get to see but whose contribution to this project cannot be overstated.

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    We will bankrupt ourselves in the vain search for absolute security. -- Dwight D. Eisenhower
  9. Re:second picture by An+Ominous+Coward · · Score: 4, Insightful

    Ah, the "Whoosh". Because when your poor attempt at humor is indistinguishable from idiocy, clearly it's the audience's fault.

  10. News coverage by johnw · · Score: 5, Interesting

    Having checked a number of on-line news sites, the best real-time coverage seems to be on XKCD

  11. Re:second picture by ColdWetDog · · Score: 4, Informative

    Rough crowd tonight.

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    Faster! Faster! Faster would be better!
  12. Re:second picture by hey! · · Score: 4, Insightful

    Bad form, calling "whoosh" on a response your own attempt at a joke. Only a third party can call "whoosh".

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