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

Webb telescope discovered a bizarre exoplanet with carbon atmosphere, no hydrogen, orbiting a super-dense spinning star.

The discovery of an extraordinary multi-planet system has demonstrated that so-called "hot Jupiter" planets may not be lonely giants after all. The findings could force scientists to revise their ...

A strange 200 million-year-old object with the mass of a planet has been discovered 20 light-years from Earth, outside our solar system. The "rogue," as it's referred to by researchers, is producing ...

The discovery of a strange wobbling planet has left astronomers confused but could reveal the secrets of planet formation. The new exoplanet, named TOI-1408 c, is situated about 455 light-years from ...

Astronomers have identified a vast, cotton-candy–light “super‑puff” world that loops around its star in a wildly misaligned ...

Venus is often called Earth's evil twin due to its size, mass, material composition, and density. It even feels like Venus should've become a second Earth. However, it ended up being one of the ...

SAN JOSE, Calif. -- In what astronomers called an exciting step toward detecting Earth-like planets, a spacecraft operated by NASA's Ames Research Center has found five strange new planets, beginning ...

A distant world with carbon in its atmosphere and extraordinarily high temperatures is unlike any other planet we’ve seen, and it’s unclear how it could have formed ...

“This system is unique because we are able to view the planet illuminated by its host star, but not see the host star at all,” said co-author Maya Beleznay, a PhD candidate at Stanford University. “So ...

I find the outer reaches of our solar system fascinating. It’s a place that we know very little about considering how relatively close it is – even its size is up for debate. It’s littered with icy ...