The National Aeronautics and Space Administration has confirmed an interstellar object is passing through our solar system.

The interstellar object hurtling toward the inner solar system, where Earth is located, is much larger than previously thought, astronomers say.

I/ATLAS is a fast, ancient interstellar object. Its odd features fuel both scientific study and speculation. On July 1, ...

The anomalous nature of the object led astrophysicist Avi Loeb to apply a thought experiment to it, highlighting everything about it that might align with a hypothetical alien spacecraft.

In July, NASA reported its ATLAS (Asteroid Terrestrial-impact Last Alert System) survey telescope in Chile identified a comet ...

Called 3I/ATLAS, the object is only the third of its kind known to astronomers, and it’s likely been heading our way for ...

Earlier this week, the Sun unleashed a flurry of plasma and magnetic fields, or coronal mass ejection, at interstellar object ...

As with many big space stories, 3I/ATLAS is getting a fair share of attention as well as some more controversial theories ...

Astronomers are buzzing over 3I/ATLAS, a mysterious object hurtling through our solar system, and a new theory claims it can create planets.

In our own solar system, there are pretty good odds that you could stand on the surface of an asteroid and not even be able ...

Carnegie’s Scott Sheppard and his colleagues — Northern Arizona University’s Chad Trujillo, and the University of Hawaii’s David Tholen — are once again redefining our solar system’s edge. They ...