We're just weeks away from this interstellar visitor reaching its brightest in Earth's night skies. Will we see it?

An alien comet passing through our solar system made its closest approach to Mars recently, and two European robotic ...

Interstellar comet 3I/ATLAS — just the third such object ever confirmed to have entered our solar system — flew past Mars ...

Need a refresher about 3I/ATLAS? Here's everything to know about the interstellar object, including when the latest ...

Using JWST and ALMA data, astronomers have spotted a superlong and narrow 'galactic contrail,' possibly produced by a black ...

While Loeb is known for making some controversial claims and predictions in the past, he is still a very respected astronomer ...

The images taken by two Mars orbiters show a bright, fuzzy white dot of the comet, also known as 3I/ATLAS, appearing to move ...

Harvard researcher Avi Loeb says comet 3I/ATLAS weighs 33 billion tons and spans 3.1 miles, making it far larger than ...

A one-way trip to the Mars usually takes you about 9 months to complete, but one team out of Russia thinks they can knock that down to 30 days.

Viewed from orbit, Jackass Flats — situated in southern Nevada about 65 miles northwest of Las Vegas — could easily be ...

Space missions in the future could travel to Mars, asteroids and the outer solar system by riding on nuclear-powered rockets, ...

The asteroid belt may seem permanent, but it is far from static. Its slow decline reveals a more violent past when more ...