Ocean Worlds – Spaceflight Now

June 23, 2026

Breaking News

[ June 23, 2026 ] SpaceX launches reentry capsule demo mission called ‘Starfall’ Falcon 9
[ June 22, 2026 ] NASA’s Nancy Grace Roman Space Telescope arrives in Florida Falcon Heavy
[ June 20, 2026 ] SpaceX launches 24 Starlink satellites on Falcon 9 rocket from Vandenberg Falcon 9
[ June 18, 2026 ] SpaceX launches intelligence-gathering satellites for the National Reconnaissance Office Falcon 9
[ June 17, 2026 ] Arianespace launches its heaviest payload to date with Amazon Leo flight Ariane 6

New discoveries raise prospects for life on moons of Jupiter and Saturn

April 13, 2017 Stephen Clark

Scientists announced Thursday that measurements from NASA’s Cassini spacecraft detected hydrogen gas, a key energy source for microbial life, in a plume gushing from a vast liquid water ocean buried beneath the icy shell of Saturn’s moon Enceladus.

Study suggests Saturn’s moon Dione has underground ocean

October 11, 2016 Stephen Clark

Scientists crunching data from NASA’s Cassini spacecraft believe Saturn’s moon Dione has a liquid ocean buried 60 miles under a thick icy shell, potentially adding to a growing list of ocean worlds in the frigid outer solar system.