Comets

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.

Skywatchers this weekend will get two special, subtle treats: a penumbral lunar eclipse on Friday (Feb. 10) and a strange green comet reaching its peak viewing time the following morning.

Comet 45P/Honda-Mrkos-Pajdusakova, returning to the inner solar system after more than five years, will be visible this week with binoculars or a small telescope.

NASA's Hubble Space Telescope has detected several comets diving toward a young star about 95 light-years from Earth.

The "New Years' Eve Comet" that's been streaking across the sky this December isn't the only otherworldly visitor ringing in the New Year in Earth's neighborhood.