After a decade-long search, some scientists say a growing number of clues point to the existence of a hidden planet in the Kuiper Belt beyond Neptune — and they may soon have the opportunity to find ...

Samples collected from the near-Earth asteroid Ryugu have revealed clues about a primordial magnetic field that helped ...

8 planets orbit the Sun. The closest are the four rocky planets, the remaining gas planets inhabit deeper space. The solar system is also home to many other cosmic bodies including asteroids ...

Astronomers are investigating the possibility of a hidden ninth planet beyond Neptune, which could explain unusual orbital patterns in the Kuiper Belt.

Tiny grains from a distant asteroid are revealing clues to the magnetic forces that shaped the far reaches of the solar ...

When it came to discovering Neptune, scientists didn’t need to see to believe. The eighth planet in our solar system was ...

This showed him the planet was in fact in orbit around the Sun ... they are found further out in our solar system.” Given this distance and their pattern of movement, it’s easy to see how ...

NASA's technology-demonstrating Advanced Composite Solar Sail System (ACS3) has a bent boom in Earth orbit, a newly released photo shows. The ACS3 spacecraft launched April 23 to test key aspects ...

The study tracks icy bodies subject to some kind of perturbation that’s injecting them into the orbit of Neptune before they leave the solar system entirely ... all of the patterns that ...