Super-Earth: Quick Facts

Written and fact-checked by

The Information Architects of Encyclopaedia Britannica

Photos

Earth compared with 55 Cancri e

See All Images →

Topics

snowball planet mini-Neptune Extrasolar planet Planet Rogue planet 9 Ghostly Planets How will the Nancy Grace Roman Space Telescope discover new exoplanets?Mars Saturn space debris Planetary ring Venus Jupiter Today in History—March 10: The Day the Planets Aligned—and the World Didn’t End