A bumpy snailfish, Andean mouse opossum and ancient sea cow were just some of the many species described in 2025.

A newly discovered exoplanet is rewriting the rules of what planets can be. Orbiting a city-sized neutron star, this ...

Researchers have confirmed the mass of a free-floating planet thanks to a lucky convergence of ground- and space-based ...

Roughly 1,000 light-years away from Earth, a gigantic disk of gas and dust is swirling around a young star and giving rise to ...

Astronomers are closing in on one of the most tantalizing possibilities in planetary science, evidence that a previously ...

Astronomers just measured the mass of a free-floating planet without a star for the first time ...

With sapphire waterfalls, lava rain and orbits around dead stars, these distant worlds push the limits of what’s possible.

Young Earth was a blue planet covered in oceans, much like today. But the atmosphere was a lethal cocktail of gases, with no ...

A new study shows scientists are discovering new species faster than ever, revealing Earth still holds vast unknown ...

Mercury has long baffled astronomers because it defies much of what we know about planet formation. A new space mission ...

There could be a ninth planet in our solar system that's lying in wait to be discovered - and no, it's not Pluto. Our solar ...

Getting fit is the No. 1 resolution, according to a YouGov survey. Also on the list: Being happy (23%), eating healthier (22% ...