A strange, spider-like scar on Jupiter's icy moon Europa may mark where salty water once surged up through its fractured ...
Turn a telescope to the eastern sky in the hours following midnight on Nov. 5 to see two colossal shadows darken the cloud tops of the gas giant Jupiter as the Galilean moons Io and Europa pass ...
The Jovian moons Io and Europa will throw their shadows over Jupiter's cloud surface in the early hours of Nov. 5. Turn a telescope to the eastern sky in the hours following midnight on Nov. 5 to see ...