This artist’s rendering shows Cassini diving through the Enceladus plume in 2015. New ocean world discoveries from Cassini and Hubble will help inform future exploration and the broader search for life beyond Earth. Image credit: NASA/JPL-Caltech

Related channels: ASTROBIOLOGYEARTH, MARS, EUROPA, ENCELADUS, COMETS, ASTEROIDS, EXOPLANETS, TRAPPIST-1, DWARF PLANETS