Related topics: nasa · earth · spacecraft · saturn · cassini spacecraft

Earth's new 'moon': What you should know

The Minor Planet Centre has just announced that the Earth has been orbited by a second moon for the past three years or so. But while excitement about the discovery is growing, it is important to keep in mind that this moon ...

Looking for pieces of Venus? Try the moon

A growing body of research suggests the planet Venus may have had an Earth-like environment billions of years ago, with water and a thin atmosphere.

Juno completes its closest flyby of Io yet

Jupiter's ocean moons capture most of our attention because of their potential habitability. But Io, Jupiter's bad-boy volcanic moon, is in a class of its own. There's nothing else like it in the solar system, and NASA's ...

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