Planetesimals

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  • Planetesimals
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Abstract from DBPedia
    Planetesimals /plænɪˈtɛsɪməlz/ are solid objects thought to exist in protoplanetary disks and debris disks. Per the Chamberlin–Moulton planetesimal hypothesis, they are believed to form out of cosmic dust grains. Believed to have formed in the Solar System about 4.6 billion years ago, they aid study of its formation.

    微惑星（びわくせい、planetesimal）とは太陽系の形成初期に存在したと考えられている微小天体である。

    (Source: http://dbpedia.org/resource/Planetesimal)