3I/ATLAS is an interstellar comet that has traveled from outside the solar system, with a diameter of 10 to 20 kilometers.

Named 3I/ATLAS, the comet is only the third known interstellar object to enter our solar system, and it's the largest and ...

Dark comets are a unique type of cosmic object. While they may look like asteroids, they are actually comets with unusual ...

If it's not enough for you living through a potential apocalypse event, let's take some time to discuss another one: a comet striking the Earth from outer space! Small cosmic projectiles hit the Earth ...

The exploration of planets is exciting and all, but true discoveries and some of the answers to the fundamental questions that have plagued our species for centuries will most likely come from us ...

Recently, astronomers have made significant breakthroughs in the study of the 3I/ATLAS comet. This comet is the third interstellar visitor we have discovered to date, coming from other stellar systems ...

NASA's EPOXI mission comes within 450 miles of Comet Hartley 2. Nov. 4, 2010 — -- Thirteen million miles out in space, a NASA probe called Deep Impact has flown within 435 miles of Comet Hartley ...