Colin Pillinger, Thirteen Kilometers discussed on Naked Astronomy, from the Naked Scientists

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Not always got a great track record about i remember in fact colin pillinger greg calling pillinger at the university say you may remember me from the failed mission to mars all the failed sample return ship yeah in fact as it turns out it appears that we now know the beagle didn't actually crash knew that because camera telemetry but the imaging it appears to be that just to the last flap of the deployment mechanism didn't open which is such a terrible shame but in terms of rival at the earth if you want to decelerate your spacecraft to match the earth's orbital speed that means you have to take a lot of fuel with you in that means a lot more fuel at launch and it makes emission very expensive so what all these missions do high abusir has already done it stardust mission genesis mission and these two taking the same process that they fly in on the plan trajectory the probe is released from the main spacecraft and directly the atmosphere to speed of twelve or thirteen kilometers per second and is decelerating by friction in the atmosphere just like a meteo coming down and when the speed is fisher lower than a parachute opens in this case and they come down on a parachute not all missions have done that we were involved in genesis mission hadn't experiments on it which was to measure the solar particles coming from the sun and the idea there was that they would have a parachute which would release close to the ground and they would catch it with the helicopter unfortunately they didn't.

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