The European Space Agency says the spacecraft it successfully landed on a comet may have bounced once, before coming to rest.
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The head of the lander operation Wednesday said thrusters that were meant to push the lander down and harpoons that would have anchored it to the surface failed to work.
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Stephan Ulamec told reporters in Darmstadt, Germany, that data received from the Philae lander indicates it lifted off from the comet, turned slightly and then landed again.
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Ulamec says scientists are still trying to fully understand what happened but so far most of the instruments are working fine and sending back data as hoped.
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The landing was the climax of the decade-long Rosetta mission to observe comet 67P/Churyumov-Gerasimenko. (AP)
