Comets

‘Oumuamua’s weird motion has an explanation, and it isn’t aliens

Unless...

By Cassidy Ward | 

4 days ago

A comet is about to pass by Earth for the first (and last) time in 50,000 years

Don't forget to wave.

By Cassidy Ward | 

2 months ago

Astronomers detect a mysterious glow around the solar system

Rage, rage against the dying of the light.

By Cassidy Ward | 

3 months ago

A comet got really close to the Sun and completely freaked out

It literally blew chunks.

By Phil Plait | 

9 months ago

The biggest comet ever seen shows off its hair for Hubble

UN271 is ~137 km across, bigger than any other object like it ever seen.

By Phil Plait | 

11 months ago

Is Ryugu a dead comet masquerading as an asteroid?

The near-Earth object looks like an asteroid but may be an ice-free comet

By Phil Plait | 

1 year ago

If you're a comet, it's not easy being green. Now we know why.

Green color in comets is all in its head, not its tail.

By Phil Plait | 

1 year ago

Glass reveals a ginormous comet exploded right above the Atacama desert 12,000 years ago

We just learned a comet exploded over the desert some 12,000 years ago, and the evidence was trapped in glass.

By Elizabeth Rayne | 

1 year ago

How comets spawn could finally be demystified by a possible mission to a Centaur

Researchers are now proposing a mission that will watch a Centaur evolve from asteroid to comet.

By Elizabeth Rayne | 

1 year ago

The case of the Centaurs that didn't bark in the night

By Phil Plait | 

1 year ago