Jupiter has 67 known moons -- the most of any planet in the solar system -- and more are expected to be discovered by the Juno spacecraft.

CAPE CANAVERAL, Fla. — A NASA spacecraft rocketed away Monday on a quest to explore Jupiter’s tantalizing moon Europa and reveal whether its vast hidden ocean might hold the keys to life. It ...

The solar system’s smallest planet is just now becoming visible before dawn. Bright Jupiter and Venus point the way.

CAPE CANAVERAL, Fla. — A NASA spacecraft rocketed away Monday on a quest to explore Jupiter’s tantalizing moon Europa and reveal whether its vast hidden ocean might hold the keys to life. It ...

CAPE CANAVERAL, Fla. — A NASA spacecraft rocketed away Monday on a quest to explore Jupiter’s tantalizing moon Europa and reveal whether its vast hidden ocean might hold the keys to life. It ...

CAPE CANAVERAL, Fla. — A NASA spacecraft rocketed away Monday on a quest to explore Jupiter’s tantalizing moon Europa and reveal whether its vast hidden ocean might hold the keys to life. It ...

CAPE CANAVERAL, Fla. — A NASA spacecraft rocketed away Monday on a quest to explore Jupiter’s tantalizing moon Europa and reveal whether its vast hidden ocean might hold the keys to life. It ...

CAPE CANAVERAL, Fla. — A NASA spacecraft rocketed away Monday on a quest to explore Jupiter’s tantalizing moon Europa and reveal whether its vast hidden ocean might hold the keys to life. It ...

CAPE CANAVERAL, Fla. — A NASA spacecraft rocketed away Monday on a quest to explore Jupiter’s tantalizing moon Europa and reveal whether its vast hidden ocean might hold the keys to life. It ...

CAPE CANAVERAL, Fla. — A NASA spacecraft rocketed away Monday on a quest to explore Jupiter’s tantalizing moon Europa and reveal whether its vast hidden ocean might hold the keys to life. It ...

CAPE CANAVERAL, Fla. — A NASA spacecraft rocketed away Monday on a quest to explore Jupiter’s tantalizing moon Europa and reveal whether its vast hidden ocean might hold the keys to life. It ...