Comet 3I/ATLAS is warming up as it approaches the sun, causing a jet to emerge. The jet is visible in a dramatic new image.

Stargazers are in for a treat -- a newly discovered comet is visible in the July night sky. Comet Neowise, discovered in late March, is appearing brighter as it approaches the sun, according to ...

Two bright green comets are streaming through the skies and are visible to skygazers in the Northern Hemisphere. Both hail from the outer edges of our solar system—possibly what's known as the Oort ...

NEW YORK — Two bright green comets are streaming through the skies and are visible to skygazers in the Northern Hemisphere. Both hail from the outer edges of our solar system — possibly what's known ...