What can a sample return mission from Jupiter's volcanic moon, Io, teach scientists about planetary and satellite (moon) ...

Out past Neptune are countless small icy and rocky bodies called Trans-Neptunian Objects (TNOs), and many of these have moons ...

Venus becomes the brilliant “Morning Star” in the east before dawn, the Lyrids Meteor Shower takes place and the Moon has ...

The discovery has raised a lot of questions. How do you spot moons, and why hadn’t anybody seen these ones already? Doesn’t Jupiter have the most moons? What are they going to call all these ...

Saturn and Jupiter, the two gas giants ... just 2 to 4 kilometers in diameter, that likely formed from violent collisions between larger moons or with passing comets. Technically, they’re still moons ...

Jupiter’s moon Io, the most volcanically active body ... Mura’s team pinpointed more than 40 lava lakes ranging in diameter from about 10 to 100 kilometers. That’s much larger than the ...

Fluorescent caves deep below America show how alien life could exist on one of Jupiter's moons, say scientists. The chemistry ...

Ganymede, Jupiter's largest moon and the solar system's largest, is bigger than Mercury and the dwarf planet Pluto, with a diameter of 5,268 kilometers.