Hampstead Scientific Society Lecture:


By Roger O’Brien, Open University and Hampstead Scientific Society

After ten years cruising through the Solar System, with two asteroid encounters, one flyby of Mars and several past the Earth, Rosetta reached Comet 67P Churyumov-Gerasimenko a year ago.

The comet is shaped like a rubber duck! Rosetta watches it carefully and dropped Philae to land on its surface. That surface is dramatic with chasms, cliffs, boulders, smooth flat areas and circular features that probably aren’t craters.

Rosetta has poured cold water on the idea that Earth’s water came from comets.

Philae lies in the dark, now, but 67P’s summer Sun may rise high enough to revive it.

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