Research and development is underway to create robots that can hunt for signs of life in the vast oceans that exist under the ...

On January 7, 1610, the Italian astronomer Galileo discovered three of Jupiter's moons: Callisto, Europa and Io. When he ...

Italian astronomer Galileo Galilei peered through his newly improved 20-power homemade telescope at the planet Jupiter. He ...

Europa was one of four moons discovered on Jan. 7, 1610, by astronomer Galileo Galilei. Speaking of Galileo, this photo was ...

Nearly 415 years ago to the day astronomer Galileo Galilei discovered the moons surrounding Jupiter looking through his homemade telescope.

Mars has two moons, Phobos and Deimos. Scientists still debate whether these came from asteroids that passed close into Mars' ...

In recent years, Saturn has overtaken Jupiter as the planet with the most satellites in our solar system. How many moons does ...

As many as 400 volcanoes are erupting on ... and how it changes as the volcanic moon is squeezed and stretched by Jupiter's (and its fellow moons') gravity. If Io did have a sub-surface ocean ...

Jupiter doesn’t have seasons ... as spacecraft like Juno complete observations of the planet, and its various moons. In fact, recent observations of the Jovian moon, Io, have shown some ...

While Jupiter is known for its four large Galilean ... breaking up at some point in Saturn's past. Saturn's major moons have many names from cultures around the world. Some include Aegir (Norse ...