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 ...

Despite the lack of a dedicated mission to the planet, scientists have learned plenty through ground observations and space ...

These grains, thought to have come from the outer Solar System ... study on the TRAPPIST-1 star system, aiming to detect possible radio signals between its planets. Over 28 hours, they explored ...

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

It would depend on a lot, say our readers, from how big it was to the route it took - but it could have significant ...

You may need binoculars or a telescope for this one. It includes the three furthest planets in our solar system. There will be six planets visible this time around, including Venus, Mars ...

The planet Jupiter has no solid ground – no surface, like the grass or dirt you tread here on Earth. There’s nothing to walk ...

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

Astronomers have been trying to find a new planet beyond the orbit of Neptune for several decades, but all to no avail. Its nickname is Planet Nine; supposing this planet exists, it could help explain ...

Understanding what happened to Mars' magnetic field is vital if we are to learn the Red Planet's ancient history ... even why the entire solar system is that way," said Harvard's Sarah Steele ...

JERSEYVILLE - In an exciting display of creativity and scientific understanding, seventh grade science students at St.

We are living on a planet already hotter and more unstable than at any time in human history. Pretending otherwise will only ...