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Live Reporting

By Helen Briggs, Jonathan Amos, David Molloy and Paul Rincon

All times stated are UK

  1. Mission vollendet!

    The first congratulatory message may have been in English, but the European Space Agency is tweeting "mission complete" in an array of languages from member nations.

    Four tweets from @ESA_Rosetta proclaiming "mission complete" in multiple languages
  2. A long rest

    The mission's Twitter account tweets its success with an illustration - that's a fairy tale Rosetta holds for reading material, titled "once upon a time...".

    View more on twitter
  3. Bye bye Rosetta

    The mission's been a success, say space controllers.

    They confirm it's collided with the comet it's been chasing and studying.

    "We've done it," said the European Space Agency.

  4. No heartbeat

    The frequency carrier signal from Rosetta should have a large peak in its centre - as soon as that disappeared, a few claps and a muted cheer rose from the crowd at mission control.

    It's assumed the spacecraft crashed into the comet - ending the signal right on time.

    The green graph showing Rosetta's signal dissappears
  5. Mission over

    Rosetta has ended its mission to a comet. Contact with the spacecraft has been lost, marking the end of its quest.

  6. The science keeps coming in

  7. The big picture

    Mission control briefly showed this rough grid of many of the photographs they've received, giving an overview of the area - but each image is, itself, a high-resolution one.

    They'll stitch them together carefully later, creating a high-resolution surface image.

    A 20-image composite shows a wide view of the landing site.
    Image caption: A 20-image composite shows a wide view of the landing site, made of many images taken during the descent
  8. Is there a chance Rosetta will bounce?

    Could Rosetta follow the lead of the Philae lander, and bounce off the surface?

    "It's a good possibility," Mark McCaughrean tells the live webcast from mission control. "But we won't know, because we turn off when we touch the surface."

    "This is space, anything can happen out there."

  9. Waiting for news

  10. Final rest?

    The small marker in the bottom right of this photo marks Rosetta's final resting place, if all goes to plan.

    This photo shows the spot of the Rosetta landing site, with a small blue dot
  11. Dot marks the spot

    This is where they think it's landed.

  12. Mission over?

    Rosetta should have hit the comet, according to space controllers.

    We should get confirmation within an hour.

  13. Into the final moments

  14. As told in pictures

    Physicist Dr Paul Coxon has helpfully condensed the decade-long mission into a single tweet. 

    It's been retweeted the European Space Agency account, too.

    View more on twitter
  15. Excitement in the control room

  16. What's been found out?

    • Eleven scientific instruments to sniff and photograph the comet at all angles. 
    • More than 100,000 images taken - with images up to the moment of impact.  
    • Information on how the comet - the shape of a rubber duck - was formed. 
    • Some surprises - the comet surface was harder than expected, with less water ice and lots of rocks
    • Water - it's a different "flavour" than back on Earth
    • The smell - scientists say it's a mixture of rotten eggs, horse urine, alcohol and bitter almonds.
  17. Why crash Rosetta at all?

    Rosetta was never designed to land on the comet - but the mission team have decided to do it anyway.

    Why? To end the mission "in a controlled and scientifically valuable way".

    Rosetta’s moving alongside the comet away from the Sun – and that means it has less solar power to run things.

    "Already, spacecraft operators are having to share the power between the instruments because not all of them can be switched on at the same time any more," Esa said.

    "In the absence of sufficient power, further out on its orbit around the Sun, the remaining fuel in the spacecraft would freeze."

    So before that happens, the Rosetta team will try to put it down on the comet – and learn what they can.

  18. The final manoeuvre

    Rosetta spacecraft
    Image caption: Watch how the spacecraft got ready for the dive
  19. Latest image of the comet

    The spacecraft has taken this picture from 5.8km away.

    The comet from 5.8km away
    Image caption: A new closer picture of the comet