Comets that have hit Earth have been a mixed bag. Early in Earth's history, during the solar system's chaotic beginning, they ...

A much-anticipated green comet that had stirred excitement among amateur astronomers and skywatchers around the world has met ...

Astronomers suspect the comet came from the Oort Cloud, a reservoir of icy bodies thought to exist at the edge of our solar ...

It’s known for its bright and fast-moving shooting stars resulting from Halley’s comet, the most famous comet of all, which ...

NEW YORK — A newly discovered green comet tracked by telescopes has likely broken apart as it swung by the sun, dashing hopes ...

A recently-discovered comet could have appeared in the night sky with the naked eye, but its passage near the sun has turned ...

A newly discovered green comet tracked by telescopes has likely broken apart as it swung by the sun, dashing hopes of a naked ...

Every so often, a comet passes through the inner solar system. “These are relics from when the solar system first formed,” said Jason Ybarra, director of the West Virginia University ...

Every so often, a comet passes through the inner solar system. “These are relics from when the solar system first formed,” said Jason Ybarra, director of the West Virginia University ...

Astronomers have observed a rocky planet rapidly disintegrating near its star, trailing a comet-like tail of mineral dust.

Astronomers suspect the comet came from the Oort Cloud, a reservoir of icy bodies thought to exist at the edge of our solar system far from the warm reach of the sun. “Every now and then ...

Every so often, a comet passes through the inner solar system. “These are relics from when the solar system first formed,” said Jason Ybarra, director of the West Virginia University ...