The sun has become more and more active over the last 16 years, in a turn that surprised scientists and could affect space ...

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 official number of exoplanets—planets outside our solar system—tracked by NASA has reached 6,000. Confirmed planets are ...

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 anomalous nature of the object led astrophysicist Avi Loeb to apply a thought experiment to it, highlighting everything ...

The solar system lost its ninth planet back when Pluto was demoted to a dwarf planet, but research might indicate that there ...

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