げんしわくせい
原始惑星
1. protoplanetAstronomy
2. ProtoplanetProtoplanets are large planetary embryos that originate within protoplanetary discs and have undergone internal melting to produce differentiated interiors. They are believed to form out of kilometer-sized planetesimals that attract each other gravitationally and collide. According to planet-formation theory, protoplanets perturb each other's orbits slightly and thus collide to gradually form the dominant planets.
Read “Protoplanet” on English Wikipedia
Read “原始惑星” on Japanese Wikipedia
Read “Protoplanet” on DBpedia
Read “Protoplanet” on English Wikipedia
Read “原始惑星” on Japanese Wikipedia
Read “Protoplanet” on DBpedia
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