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

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 ...

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

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

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

Harvard astronomer Avi Loeb argued interstellar object 3I/ATLAS "could either visit us or release some mini-probes that ...

Federal funding is about to run out for 19 active space missions studying Earth's climate, exploring the Solar System, and ...