"This is a big step in understanding the outer solar system," team leader Rosemary Pike from the Center for Astrophysics | ...

The astronomers observed hot minerals just beginning to solidify – the first specks of planet-forming material, the ...

Just the third-ever confirmed interstellar object has been detected in our solar system. Here's what we know. (Spoiler: It's not aliens.) ...

Astronomers unveiled a striking view of the new interstellar visitor 3I/ATLAS on its journey toward the inner solar system.

The deep-space optical communication link could revolutionize how scientists communicate with spacecraft as they explore the ...

The Solar System is a fascinating place, with each planet orbiting the Sun at its own unique distance. But how far apart are ...

"It is possible that a planet once existed in the solar system but was later ejected, causing the unusual orbits we see today ...

Two meteorites found in the Sahara in 2023 might be from Mercury, a study suggests, but doubts remain due to how little is ...