Mercury may be shrinking even more than previously believed, according to new research.

For the first time, scientists used the combined power of NASA's Hubble and James Webb Space Telescopes to study some of the ...

Earth is far from the only celestial body in the Solar System.

A newly discovered object speeding through our solar system is sparking excitement among astronomers because it’s not from around here. Believed to be a comet, the object is only the third celestial ...

It may not feel like it, but everything in the universe is in constant motion. Our Sun, with all its planets, orbits the center of the Milky Way, flying through the cosmos at around 450,000 miles per ...

There may be another world lurking between the orbital lines of our solar system. Astronomers in Japan have published their theory of an “Earth-like planet,” dubbed Planet Nine, that’s hiding in plain ...

Five ions detected in 3I/ATLAS reveal an unusually nitrogen-rich comet whose ices may preserve an extraordinarily cold ...

When 'Oumuamua traversed our solar system in 2017 it was the first confirmed Interstellar Object (ISO) to do so. Then in 2019, Comet 2l/Borisov did the same thing. These are the only two confirmed ...

There's a strong chance our solar system once had at least one more planet than it does today and that the odds of the moons ...

Astronomers have discovered that the Solar System traversed the Orion star-forming complex, a component of the Radcliffe Wave galactic structure, approximately 14 million years ago. This journey ...

The new analysis of 3I/ATLAS was led by Dr. Lea Ferellec, a research fellow at Northumbria University’s School of Engineering ...