Super-Earths may form in two ways

Contrast in star composition hints at two categories for large rocky planets

Super Earth vs. Earth

BULKING UP   The formation of super-Earths like Gliese 832c, a potentially habitable planet roughly 5 times as massive as Earth (illustrated here), puzzles astronomers. New research suggests that not all super-Earths form the same way.

Planetary Habitability Laboratory/University of Puerto Rico at Arecibo

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