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So comets tell us a lot about the history of our solar system. They are
considered to be the relics of when the solar system and the planets, the Sun
even, actually formed. So, they are made of dust and gas and ice that's actually
considered to be from that early time when everything was actually starting to
form. We can actually do observations of comets
quite routinely since they come into the inner solar system pretty regularly
and by doing so we can compare what the composition of comets is to things that
we've seen in outer space, so where other stars are forming, even other planetary
systems and this sort of gives us some insight into whether or not they really
are pristine in nature and whether or not that composition is the same in
other planets that are forming across the universe or even our own a galaxy to
see if we have things that could support something like life.
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