#OTD in 2011, we discovered Kepler-20e, the first planet beyond our solar system smaller than Earth. In all, we've confirmed six exoplanets in the system orbiting a Sun-like star more than 900 light-years from Earth. https://exoplanets.nasa.gov/resources/91/kepler-20e-the-smallest-exoplanet-artists-concept/
#NASAExoplanets
#NASAExoplanets
Kepler-20e -- The Smallest Exoplanet (Artist's Concept) - Exoplanet Exploration: Planets Beyond our Solar System
This artist's animation flies through the Kepler-20 star system, where NASA's Kepler mission discovered the first Earth-size planets around a star beyond our own.Exoplanet Exploration: Planets Beyond our Solar System