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So comets tell us a lot about the history of our solar system. They are

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considered to be the relics of when the
solar system and the planets, the Sun

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even, actually formed. So, they are made
of dust and gas and ice that's actually

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considered to be from that early time
when everything was actually starting to

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form. We can actually do observations of
comets

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quite routinely since they come into the
inner solar system pretty regularly

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and by doing so we can compare what 
the composition of comets is to things that

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we've seen in outer space, so where other
stars are forming, even other planetary

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systems and this sort of gives us some
insight into whether or not they really

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are pristine in nature and whether or
not that composition is the same in

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other planets that are forming across
the universe or even our own a galaxy to

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see if we have things that could support
something like life.

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