现有理论认为,原恒星(Protostar)在脱离母云之后,靠自身的重力、或来自周围环境给的刺激而收缩,直到中心温度够高时,开始产生核融合反应(若原恒星质量太小,无法靠自...
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YYF摇摇 「进阶系列 - 原始流星(ProtoStar) 介绍片段 2008年世界摇摇大赛冠军John Ando 监制之摇摇。 -「弧坑轴承让绳子集中在摇摇中间，增强平衡性。
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以上来源于: WordNet
N a cloud of interstellar gas and dust that gradually collapses, forming a hot dense core, and evolves into a star once nuclear fusion can occur in the core 原恒星
It was compressed enough to become a protostar but enough material was left over to form planets, moons, asteroids and comets.
压力足够使之形成一颗恒星，剩下的物质形成了行星，卫星，小行星和彗星。
The conditions in a protostar resemble far more closely in situation in red giants, most of whose volume is caught up in stormy convection.
原恒星的条件更加类似于红巨星的情形，红巨星体积的大部分都卷入剧烈的对流中。
The simulation reveals how pre-stellar gases would have actually evolved under the simpler physics of the early universe to form this protostar.
这一模仿展示了前星体云怎样在早期宇宙这么简单的物理条件下形成的。
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