Astronomers say that mysterious interstellar visitors like 'Oumuamua and 3I/ATLAS are the most common large bodies in the ...

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 ...

Travel through time to witness some of the most remarkable episodes in our solar system's history, uncovering its ancient ...

The Japanese Hayabusa2 spacecraft visited the asteroid Ryugu, which had flowing water for over a billion years. This unexpected discovery, made when the spacecraft collected and returned samples, adds ...

NPR's Ari Shapiro talks with astronomer David Jewitt about what we can learn from the third interstellar object to have entered our solar system, a comet-like object known as 3I/ATLAS.

The Voyager spacecraft, on a decades-long journey of exploration, have made an unusual discovery at the edge of our solar system. They’ve detected a layer of hot plasma at the solar system’s boundary, ...