But now a pair of researchers believe extraterrestrial life could exist on a rogue planet that has been ejected from its birthplace.
但是现在有两个研究者指出，有可能有地外生物生活在漂浮星系外的星球上，这个星球从它的诞生地开始在宇宙空间中一直流浪。
The idea of rogue planets wandering the galaxy is not as far-fetched as it may sound. Gravitational tugs-of-war with other planets or passing stars can boot a planet out of its solar system.
流浪行星在星系中游走这个概念并没有它听起来那么难以捉摸，与其他星球或流星的引力之战很有可能使该星球脱离太阳系。
The idea of rogue planets wandering the galaxy is not as far-fetched as it may sound. Gravitational tugs-of-war with other planets or passing stars can boot a planet out of its solar system.
流浪行星在星系中游走这个概念并没有它听起来那么难以捉摸，与其他星球或流星的引力之战很有可能使该星球脱离太阳系。
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