To understand how chaotic the early solar system was, we need only gaze at the moon. Its cratered surface bears the scars of ...

A planet circling at a sharp 90-degree angle to the orbits of its two host stars has now been confirmed. This discovery ...

Our solar system may have a ninth planet after all, researchers say. The possibility that an additional planet may be ...

They know that it is a sub-Neptune planet with a radius 2.35 times that of our planet, and so a volume 13 times that of Earth ...

An alternate explanation that fits the evidence is that Vesta was once part of a planet – but which planet that might been ...

Caroline Delbert is a writer, avid reader, and contributing editor at Pop Mech. She's also an enthusiast of just about ...

The presence of another planet in the solar system could explain the odd movements of some of the bodies in the Kuiper Belt.

SpaceX CEO Elon Musk shares his vision for life on Mars in an exclusive interview on 'Jesse Watters Primetime.' ...

Captain Planet and the Planeteers was a beloved ’90s animated series. A lot of ’90s kids have fond memories of the cartoon, a ...

It’s a shocking twist: The new Planet Hollywood has really good food. The celeb-magnet eatery opened its third NYC iteration ...

Mars, one of our closest planetary neighbors, has fascinated people for hundreds of years, partly because it is so similar to ...

Jeremy Irons, Vanessa Redgrave and Michael York have joined the voice cast of 3D animated family sci-fi adventure “The ...