The ice fountains of Enceladus Fountains of water ice blast thousands of kilometres above the surface of Saturn's tiny moon Enceladus. It is thought that the pull of Saturn's powerful gravity distorts the moon and heats the interior, forming an undergrou
The theory that our universe is contained inside a bubble, and that multiple alternative universes exist inside their own bubbles — making up the 'multiverse' — is, for the first time, being tested by physicists. Physicists are now searching for
This stunning false-colour picture shows off the many sides of the supernova remnant Cassiopeia A. Located light-years away, Cassiopeia A is the remnant of a once massive star that died in a violent supernova explosion 325 years ago.