A newly discovered warp in the outer Solar System may have been created by a small, rocky world, much closer to the Sun than ...

There are a couple of ways that scientists can date planets, so which planets formed first in our solar system?

A recent study by Princeton University astronomers suggests the possible existence of a previously undetected planet in our ...

The Asteroid Terrestrial-impact Last Alert System, better known as ATLAS, detected a fast-moving object entering our solar ...

Siraj’s Planet Y search started about a year ago when he was trying to find out whether the shape of the Kuiper Belt is flat.

Wave-particle interactions across the solar system can have a wide range of effects though they are caused by the same set of ...

The workings of our solar system are roughly the same now as they have been for millions of years. Moons circle their planets, the planets circle the sun, the sun’s magnetic fields and sunspots wax ...

All of our solar system’s planets are lining up to parade through the night sky at once. This extraordinary celestial event will see the sky scattered with seven visible planets in what is known as a ...

One of the most notable properties of the giant planets in our solar system—Jupiter, Saturn, Uranus and Neptune—are the ...

Scientists from the Southwest Research Institute have found strong evidence that near-Earth asteroids Bennu and Ryugu share a common origin with Polana, a much larger asteroid in the main belt. By ...

When I was a kid, there were nine planets. Now we know of thousands! But that includes exoplanets, alien worlds that orbit alien suns. Only eight planets call our solar system home. Or there might ...