A super-Earth is a planet with a mass larger than Earth's, roughly up to 10 times greater.
超级地球是指那些比地球质量大的系外行星，它们的质量一般约为地球的10倍左右。
When scientists first discovered Gliese 581 c, another confirmed super-Earth, in 2007, they thought the planet was, just possibly, capable of hosting life.
格利泽 581c被确认是另一个“超级地球”，科学家在2007年首次发现它的时候，一度以为它有条件承载生命。
The planet orbiting this star is very different -- with a mass of only about 12 Earths it is likely to be a giant rocky planet: a so-called "super-Earth."
环绕这颗恒星公转的行星与众不同——其质量仅约为12 颗地球，可能是一颗巨星岩石行星：所谓的“超级地球”。
The planet orbiting this star is very different -- with a mass of only about 12 Earths it is likely to be a giant rocky planet: a so-called "super-Earth."
环绕这颗恒星公转的行星与众不同——其质量仅约为12 颗地球，可能是一颗巨星岩石行星：所谓的“超级地球”。
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