There are 59 total entries, showing that only a small portion of the worlds we’ve discovered are contenders for cosmic company.
Here are 9 promising exoplanets for life off Earth:
MARK GARLICK/SCIENCE PHOTO LIBRARY/Science Photo Library/Getty Images
This super-Earth has a radius 2.4 times that of our home planet, and orbits in the habitable zone of its host star. It could be covered in a vast ocean, though scientists are still unsure about its makeup.
This planet is just one of several in the TRAPPIST-1 system that could potentially host life. TRAPPIST-1e is about the same size as our planet, and orbits in the habitable zone of a dwarf star, 40 light years from Earth.