Comets 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 1 month 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 month 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 4 months 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 6 months 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 6 months ago The case of the Centaurs that didn't bark in the night By Phil Plait 7 months ago Why did this comet disintegrate when its sibling was able to hold it together? By Phil Plait 9 months ago This asteroid fizzes like Pop Rocks in space (and could almost pass for a comet) By Elizabeth Rayne 9 months ago Don’t panic! But a gigantic comet is currently inbound toward the Sun By Phil Plait 11 months ago A dead comet that doesn't chafe By Phil Plait 1 year ago Load More
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 1 month 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 month 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 4 months 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 6 months 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 6 months ago
Why did this comet disintegrate when its sibling was able to hold it together? By Phil Plait 9 months ago
This asteroid fizzes like Pop Rocks in space (and could almost pass for a comet) By Elizabeth Rayne 9 months ago
