None of those planets are like Gliese 581 g, a rocky world about three times the mass of Earth orbiting — along with five sibling planets — a red dwarf star 20 light-year from Earth.
以上说到的行星没有一个像Gliese 581g——一个轨道是地球三倍的满是岩石的世界——还有五个姊妹行星——一个距地球20光年的红矮星。
None of those planets are like Gliese 581 g, a rocky world about three times the mass of Earth orbiting — along with five sibling planets — a red dwarf star 20 light-year from Earth.
以上说到的行星没有一个像Gliese 581g——一个轨道是地球三倍的满是岩石的世界——还有五个姊妹行星——一个距地球20光年的红矮星。
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