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

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

There are quite a few other places we might find life in the solar system, including dwarf planets like Ceres. Ceres is ...

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

The Solar System is vast, made up of eight planets, countless moons, and millions of asteroids, all orbiting the Sun. But like any territory, it has a boundary. This boundary is invisible, yet it ...

I/ATLAS is a fast, ancient interstellar object. Its odd features fuel both scientific study and speculation. On July 1, astronomers detected a strange, fast-moving object racing toward the Sun. Named ...

Astronomers were fascinated after spotting an object from interstellar space hurtling through the solar system earlier this ...

The spacecraft will study the heliosphere, a vast bubble created by the Sun's solar wind. This bubble acts like a shield, ...

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.

Astronomers have uncovered a massive new trans-Neptunian object, 2017 OF201, lurking at the edge of our solar system. With an orbit stretching 25,000 years and a size that may qualify it as a dwarf ...

On Sept. 21-22, a partial solar eclipse will see the moon sweep over the sun's disk, blocking its light over a swathe of the ...