Interstellar comet 3I/ATLAS was discovered just five and a half months ago, and in that time has taken the world by storm.

No two comets are exactly alike. While SWAN’s orbit is very well aligned with the plane of the planets as they orbit the sun, Lemmon’s orbit is highly inclined, tipped by more than 140 degrees, ...

While online conspiracies swirl, comet 3I/ATLAS made a close pass by Earth on Dec. 19, giving astronomers a rare glimpse of a ...

Comet 3I/ATLAS, a rare interstellar visitor, is visible this week as it departs the solar system, with some public events ...