Exoplanet Totebar [1]
Astronomers have discovered more than 5,000 planets in other star systems, most of them found by the Kepler space telescope. This graphic provides an overview of the types of worlds discoverd so far. [NASA/JPL/Caltech]

Astronomers have discovered more than 5,000 planets in other star systems, most of them found by the Kepler space telescope. This graphic provides an overview of the types of worlds discoverd so far. [NASA/JPL/Caltech]