The number of planets that orbit the sun depends on what you mean by “planet,” and that’s not so easy to define ...

This places it between Earth and Neptune in a size range that typically divides exoplanets ... expands our understanding of the diversity of planets (just like this strange object in our Solar System) ...

The article humorously imagines how planets would describe themselves if they were dating profiles. Each planet has a unique ...

While the composition of gas and dust in a molecular cloud is fairly uniform, everything changes once a star begins to form.

Subscribe today and save an extra 5% with checkout code 'LOVE5' Engaging articles, amazing illustrations & exclusive ...

WASP-121b is like nothing in the solar system, raining liquid metal and being puffy like a marshmallow. The origins of these ...

The acid yellow moon Io that orbits Jupiter may be less than 30% the size of Earth, but is considered the most volcanic body ...

NASA's OSIRIS-REx mission discovered molecules vital to life and a history of saltwater on asteroid Bennu. The findings ...

The OSIRIS-REx mission returned to the sample to Earth in September of 2023, and these studies show that it contains amino ...

A U.S. scientist searching for a civilization across 7 Earth clones circling the red dwarf star TRAPPIST-1 says its own alien ...

The formation of our solar system from a singular nebula raises an intriguing question: why did each planet develop with a ...

Two new studies show a briny, carbon-rich environment on the parent body of the Bennu asteroid was suitable for assembling ...