Scientists studying a region of outer space near Pluto have discovered the unexpected: a celestial body that has an ...

“Mars, can you please clean up your Legos?” “Jupiter, finish your peas.” “Don’t pull the cat’s tail, Mercury!” ...

A rare observation opportunity revealed the presence of a thin atmosphere around a small object beyond Pluto.

By Will Dunham WASHINGTON, May 4 (Reuters) - In the far reaches of our solar system - beyond the outermost planet Neptune - ...

Many of us grow up thinking about space and dreaming about what might be seen out there—but the vast majority of us probably haven’t even given a single stray thought to what outer space might smell ...

To date, humanity has discovered over 6,200 confirmed exoplanets, or planets outside of our solar system, according to NASA's ...

If confirmed, the rock would become just the second world past Neptune in our solar system to host an atmosphere.

The Artemis 2 astronauts saw several impact flashes on the moon during their epic flyby, observations that have excited ...

Astronomers have detected a thin yet rare atmosphere for the very first time beyond Pluto around a small celestial body in ...

While Galileo's observations killed off the old model, we would need to wait centuries for conclusive evidence that Earth ...

Jupiter’s moon Ganymede is larger than the planet Mercury, hides a massive ocean beneath ...