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protoplanet |
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protoplanet [′prōd·ō‚plan·ət] (astronomy) A precursor of one of the giant planets, which is believed to have formed, along with its satellites, from a minisolar nebula in a manner similar to that of the formation of the sun and planets. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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Some researchers have suggested that icy material in the outer reaches of the solar system built up into protoplanets about 10 times more massive than Earth. |
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