Astronomers have just discovered a new celestial body in our solar system that could challenge major space theory. 2017 OF201 ...

Our solar system’s origin story spans billions of years and involves clouds of gas, cosmic collisions, and planetary ...

Located 15,000 light-years away in a region of the Milky Way brimming with stars, gas and dust, this object could be a highly ...

A planet twice the size of Jupiter has been confirmed in Nu Octantis. Its retrograde orbit and origin raise new questions about planetary formation in binary systems.

People always want to know what will happen to Earth when the sun eventually swells up as a red giant. For one thing, the ...

Astronomers confirm the existence of small, hot and likely rocky planets by observing the subtle gravitational wobbles of the star they orbit Researchers supported by the U.S. National Science ...

Scientists are intrigued after spotting a highly unusual celestial object lurking at the very edge of our solar system.

The Hubble Space Telescope is continuing to unlock details about the Trappist-1 system, which includes four planets that could hold liquid water.

Astronomers have discovered a new dwarf planet, named 2017 OF201, far beyond Pluto's orbit. It takes 25,000 years to orbit ...

The newly discovered object, named 2017 OF201, has a 25,000-year orbit and is believed to be a large contender for dwarf ...

A team of astronomers believe they may have discovered a new dwarf planet—just like Pluto—on the edge of our solar system.

Hunting for the building blocks of life? Located in the asteroid belt, Ceres is likely a good bet, study finds ...