Philae, amino acids, and the origins of life

Space: the final frontier
Last week, the Philae probe successfully landed on comet 67P, an icy lump of rock which is over 3 miles long and nearly 2 miles wide – and over 300 million miles away.

Comet_67P_on_22_August_2014_NavCam

Comet 67P, or Churyumov–Gerasimenko. ESA/Rosetta/NAVCAM

One of the reasons that comets are of such interest to scientists that the European Space Agency would spend 1.4 billion euros sending the Rosetta spacecraft 4 billion miles on a mission that would take ten years to come to fruition, is that comets could hold clues to the origin of life on Earth.
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