Just how big can a super-Earth get while staying 'habitable'? - Space.com

But could these giant, rocky planets actually sustain the conditions for life? Or is life limited to smaller planets like our own?

Of the thousands of exoplanets discovered so far, the most common are "super-Earths" — worlds bigger than Earth but smaller than Neptune. Some of these planets even lie within the habitable zones of … [+5933 chars]

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