Landing on a comet

Philae lander lander seen from RosettaThe European Space Agency has, in the last 10 minutes, landed a probe (left) on the surface of a comet for the first time. This is important as it may help explain the origins of life on Earth as comets were there at the formation of the solar system. Notwithstanding the technical feat associated with achieving a landing on a rocky object travelling at 18km/s and is 510 million kilometers away (it takes over 30 minutes to get a signal back to Earth from the craft).

There is a real UK political dimension to this captured brilliantly in a tweet:

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