Large hailstones made of ammonia may explain why the gas is missing from large pockets of Jupiter's atmosphere.

Recent flybys of the fiery world refute a leading theory of its inner structure — and reveal how little is understood about ...

Solar Orbiter pieced together 200 ultraviolet images to show our star’s million-degree atmosphere in all its glory.

Skywatchers worldwide are in for a charming cosmic display before the Sun rises Friday, as three celestial bodies will appear in close conjunction.

Some of the fastest canines on four very short legs have raced for glory in Scotland’s annual Corgi Derby. The Musselburgh ...

A bizarre hailstorm of icy “mushballs” — slushy mixtures of ammonia and water — has been confirmed on Jupiter, where intense ...