At the right point of the orbit and stellar cycle, the star’s chromosphere brightens.

A planet roughly the size of Neptune has stunned astronomers by orbiting its star in the opposite direction of the star’s ...

The hunt for Planet Nine continues as new discoveries make the Solar System’s biggest mystery even harder to solve. Is there ...

The rusty world is full of mysteries—and some of the solar system's most extreme geology. Learn more about Earth's smaller, colder neighbor.

Earth, our home planet, is a world unlike any other. The third planet from the sun, Earth is the only place in the known universe confirmed to host life. With a radius of 3,959 miles, Earth is the ...

New research using NASA's powerful JWST telescope has identified a planet 41 light years away which may have an atmosphere. The planet is within the "habitable zone," the region around a star where ...

Planet 9 would fall somewhere in between these categories. It could be what is known as a Super-Earth, a rocky planet larger than our own, or a sub-Neptune, a gaseous world less massive and slightly ...

Ali is a former editor and seasoned list writer with Collider. She also has experience and bylines published by BridgeTower Media and Wealth of Geeks. While getting her Bachelor's in English and minor ...

Satellite-imagery and data-analysis company Planet is restructuring and laying off 117 employees. "This action was taken to increase the company's focus on its high priority growth opportunities and ...