Ahead of 3I/ATLAS’s perihelion on October 29, Harvard astrophysicist Avi Loeb speculated that the day would be a ‘black swan ...

Researchers first identified this cosmic intruder on July 1, thanks to the Asteroid Terrestrial-Impact Last Alert System ...

NASA shares why its HiRISE photo of 3I/Atlas appears blurry, even as amateur astronomers release sharper comet images.

NASA has dismissed the alien theory for interstellar object 3I/ATLAS, but Harvard's Avi Loeb warns that ignoring anomalies ...

A quick look at Avi Loeb’s thoughts on NASA’s 3I/Atlas press event and the larger questions he believes remain open.

A fast-moving object from outside our Solar System has captured global attention since it was first detected in July.

SpaceX launched another batch of Starlink satellites early Saturday, the record 101st flight this year from Florida's Space ...

Earlier this week, NASA officials released long-delayed images of interstellar visitor 3I/ATLAS.

The astonishingly well-preserved nasal cavity of a Neanderthal in Italy has finally settled one of the great debates in ...

Rumors of its biological origins have been greatly exaggerated, but comet 3I/ATLAS is still very worth paying attention to.

"Comets Lemmon and SWAN soar millions of miles away from Earth, beaming with auroras and airglow, in these celestial images ...

Is there a full moon tonight? Here's what to know about today's special moon phase and when to look up for the next meteor ...