We landed on this pile of gas and dust expecting to find something that would advance our scientific knowledge, but what we actually found was the ruins of the Rosetta spacecraft. Two hundred years ago, a long extinct human civilisation had sent its flimsy probe to the comet, thinking it would advance their knowledge. How wrong they had been. It hadn't lasted long. To us, the spacecraft was a much needed food source. I put part of the wing into my mouth and crunched down. It wasn't often we got to eat metal these days. Our trip was worth it.