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 ...

It’s commonly known that the Sun is the center of our solar system, with all the planets orbiting around it. However, this ...

The movements of the planets in the Solar System are pretty difficult to get your head around, even before we get started on ...

Earth, between sweltering Venus and frozen Mars, formed and orbits within a band where water could persist in solid, liquid, and gaseous phases. Mars had surface water, but not as much as Earth, and ...

The historic probes are the farthest human-made objects from Earth. Just how far they've gone will blow your mind.

Humans have sent spacecraft all over our neighborhood ... our chances of finding regular communications among planets beyond our solar system, if they exist,” said Nick Tusay, first author ...

Samples collected from the near-Earth asteroid Ryugu have revealed clues about a primordial magnetic field that helped asteroids, planets and moons grow in our solar system. Analysis of three ...

Almost all of it burns ... lead to the creation of planets. In other words, chondrites are the perfect meteorites to study for clues about the origin of our solar system. Russell, however, is ...

And what if nothing shows up at all? It would still be useful to know for sure how many planets there are, Rice said. “I think not even knowing the number of planets in our own solar system is ...