Model suggests how protoplanets kept a safe distance from the sun
动态模拟证明原行星是怎样保持与太阳之间有一个安全的距离。
Studying Vesta may give clues to the formative years of our early Solar System, as the unusual world may be one of the largest remaining protoplanets.
研究灶神星或许有助于得到早期太阳系形成的线索，因为灶神星这个不同寻常的世界也许是残留的最大原行星之一。
When the disk begins to coalesce into protoplanets, the gravity of those protoplanets pulls clumps of gas around the disk with them as they orbit the star.
当这个盘状物开始合并成为一组原行星时，它们的引力拉动着盘状物周围气体所凝聚的硬块，一起环绕着恒星作轨道运行。
Both large asteroids, also known as' protoplanets, 'are believed to have formed at the same time and in similar environments as Mercury, Venus, Earth, and Mars.
这两颗较大的小行星也被称为“原行星”，通常认为这两颗小行星形成于同一时间，并且其形成环境与水星、金星、地球和火星相同。
Both large asteroids, also known as' protoplanets, 'are believed to have formed at the same time and in similar environments as Mercury, Venus, Earth, and Mars.
这两颗较大的小行星也被称为“原行星”，通常认为这两颗小行星形成于同一时间，并且其形成环境与水星、金星、地球和火星相同。
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