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Questions to do with celestial comets.

7 votes
1 answer
624 views

Is there a significant compositional difference between Oort Cloud comets and Kuiper Belt co...

Comets can come from two sources, the Oort Cloud, or the Kuiper Belt. Is there a significant compositional difference between the two?
PearsonArtPhoto's user avatar
  • 122k
12 votes
1 answer
756 views

How important are Philae's harpoons?

If the lander can stick to the comet with just a leg or two, why does it need harpoons? …
PearsonArtPhoto's user avatar
  • 122k