Comet news, features and articles

'Oumuamua is long gone, but it's still leaving scientists guessing. A new explanation proposes that the strange object was a "monstrous fluffy dust aggregate" produced by a busted-up comet.

As comets blaze across the night sky, they can bring wonder and excitement to those watching from Earth – or even a sense of impending doom.

Rosetta's comet sent a magnetic shock wave screaming out in front of it, blazing a trail through the stellar wind. And scientists just found it.

The video, captured during the testing phase of NASA's new satellite for finding exoplanets, shows a bright white comet drifting past black, jiggling stars.

Comet flash!

Rosetta's weirdly shaped comet may have formed in a cosmic kiss inside a dirt cloud, thanks in part to Neptune's protective shadow.

A Twitter user managed to turn 25 minutes worth of images from the ESA's comet lander into a dramatic short film.

While it looks like an asteroid, the first interstellar object spotted passing through the solar system, called 'Oumuamua, may be more like a comet in disguise.

A source of mysterious radio signals could be from a passing comet, but astronomers are skeptical.

The finding shows that oxygen can be generated in space without the need for life, and could influence how researchers search for signs of life on exoplanets.