The interstellar comet 3I/ATLAS arrived looking like a routine icy visitor and then promptly started shredding the rulebook ...

Those concerned that 3I/ATLAS' arrival to our solar system meant that some sort of alien invasion was imminent can breathe a ...

Choose your fighter for the origin of water on Earth! Was it always here or did it come to this planet from somewhere else in space? And, either way, what does this mean for other water worlds in our ...

Harvard astrophysicist Avi Loeb warns 3I/ATLAS, tagged a comet by NASA, may be a rare 'Black Swan' or Trojan Horse, urging ...

3I/ATLAS has passed its closest point to Earth, meaning we will soon lose sight of it for good. Some scientists want to send a spacecraft to chase down the alien comet — or the next interstellar ...

The two green comets continue to shine brightly in twilight each evening for lucky skywatchers with binoculars in the Northern Hemisphere. For observers on Friday, Oct. 24, the bright Comet Lemmon ...

New polarimetry data on interstellar comet 3I/ATLAS reveals bizarre refractory dust, proving this alien visitor formed in a ...

Comet 3I/ATLAS is only the third known object to barrel into our neighborhood from interstellar space, and it is already ...

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, ...

Two comets are set to light up the night sky, one of which will not be seen again for over 1,000 years. C/2025 R2 (SWAN) and C/2025 A6 (Lemmon) are expected to be visible across the country this month ...

Dr. Larry Denneau of the University of Hawaii is nothing like your typical astronomer. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. What ...

On November 12, the European Space Agency (ESA) made space history when it landed a probe on a comet. The news swept the Internet by storm (even holding our attention over Kim Kardashian’s ...