Interstellar comet 3I/ATLAS might be older than our Sun and is estimated to be between eight and 14 billion years old and ...

3I/ATLAS has now made its closest approach to the sun and Earth and is now heading back out toward the outer solar system. On ...

New research suggests a comet explosion helped cause ice age extinctions, sudden cooling, and the loss of early human cultures.

Scientists have discovered the largest comet in the Oort Cloud, a formation of icy bodies at the edge of the solar system. Recent observations found that this comet was bursting with activity, both ...

2025 could be a record-breaking year in terms of discovering new dark comets. Most excitingly, the NSF-DOE Vera C. Rubin Observatory's Legacy Survey of Space and Time (LSST) is scheduled to have its ...

Comet 3I/ATLAS, the third interstellar object ever detected, reached its closest point to Earth overnight from Thursday to Friday (Dec. 18 to 19), and it remains in a good viewing position tonight.

Interstellar Comet 3I/ATLAS makes its closest Earth pass early on Dec. 19. Here's what astronomers know about its origin and speed.

A comet, dubbed C/2025 K1 (ATLAS), spectacularly broke apart into three huge chunks — and anybody with an eight-inch telescope or bigger can catch the resulting fireworks show for the next several ...