Scientists have long believed that rocky planets like Earth and Mars formed their cores through a process that required ...

As NASA rolls out more powerful telescopes in the future, scientists will need a way to determine where to point them. A new ...

OF201 spends only 1% of its orbital time close enough to us to be detectable. The presence of this single object suggests ...

Scientists may have found a planet orbiting two brown dwarfs at a wild 90-degree tilt—something never seen before.

MOBILE, Ala. (WKRG) – The National Ocean and Atmospheric Administration’s Space Weather Prediction Center is tracking a ...

The TNO, which are described as minor planets that orbit the sun at a greater distance than Neptune, were found on the edge ...

Scientists have identified an object about 435 miles (700 km) wide inhabiting the frigid outer reaches of our solar system that might qualify as a dwarf planet, spotting it as it travels on a highly ...

As it orbits the sun once every 25,000 years, the celestial body 2017 OF201 travels beyond the Kuiper Belt into a region ...

U.S. astronomers hunting for "Planet Nine" have instead stumbled on what appears to be a new dwarf planet in the solar system's outer reaches.

It's an evocative idea that has long bedeviled scientists: a huge and mysterious planet is lurking in the darkness at the ...

Learn how a possible ninth planet, the theoretical Planet X, could have acquired its wide orbit in the outer Solar System - a ...

China’s Tianwen-2 mission has launched to explore an asteroid that may be a piece of the moon, as well as an active asteroid ...