NASA has confirmed the discovery of a mysterious new planet beyond Neptune, shaking up our understanding of the outer reaches ...

Callisto, the third largest moon in the entire solar system, orbits Jupiter from about 1.2 million miles away. The rocky ...

Sure, they’re particles and rocks, but they’re still a fascinatingly long way from home. Alpha Centauri is the star system ...

Astronomers have taken a major step in understanding how planets form, thanks to the James Webb Space Telescope (JWST). A ...

The controversy endures over Pluto's true status, but the solar system underdog continues to capture hearts across the globe.

An adorable litter of kittens has been named after planets after their mom Star gave birth on the same day as a rare ...

“New Horizons shattered a major paradigm of planetary science,” says Alan Stern, the mission’s principal investigator. “Pluto ...

Whether Pluto is officially a planet is the least interesting thing about the runt of the solar system, astronomers will tell you 95 years after the discovery of the fascinating and sometimes ...

At the very beginning of its history, Earth was dry. How did it become a blue planet? A new theory could provide an answer.

Could our solar system have been temporarily exposed to an enhanced flux of cosmic-rays at some point in the ancient past?

Mars, our neighboring red planet, possesses some of the most dazzling and extreme geological features within our solar system ...

New paper points to the Alpha Centauri triple star system as likely potential source of millions of interstellar asteroids and comets.