Chance encounter with comet nets surprising results

Comets are made of the most primitive stuff in the solar system. As hunks of rock and ice that never coalesced into more planets, they give researchers clues to the evolution of solar systems.

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<p><a href="http://www.physorg.com/news110473075.html">Chance encounter with comet nets surprising results</a></p> <p>Comets are made of the most primitive stuff in the solar system. As hunks of rock and ice that never coalesced into more planets, they give researchers clues to the evolution of solar systems.</p>