The Most Promising Exoplanets for Extraterrestrial Life

Proxima Centauri b is just 4.24 light-years away. TRAPPIST-1e has seven Earth-sized neighbors. Kepler-452b orbits a Sun-like star.

Gliese 667 Cc sits in a triple star system. These worlds represent our best chance of finding life beyond Earth, but each presents unique challenges from stellar flares to tidal locking..