"Star Trek" is home to countless alien species, many of whom offer beloved characters. Some are not. We rank the 10 most ...

In July, researchers using the NASA-funded Asteroid Terrestrial-impact Last Alert System survey telescope in Chile made an ...

Astronomers have spotted a Saturn-sized world drifting through a region of space that theory once said should be almost empty ...

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

From signs of life on Mars to an interstellar visitor and weakening dark energy, 2025 reshaped space science, raising the ...

The vast, silent expanse of our solar system has just played host to a visitor from the deepest reaches of the galaxy, and it ...

In doing so, they found this orphan is within the same weight class as Saturn, strengthening the case that the galaxy teems ...

Astronomers believe the free-floating planet is around 22 percent the mass of Jupiter and lies 3,000 parsecs from the Milky ...

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

Most of the planets we’ve identified are in orbit around stars and formed from the disks of gas and dust that surrounded the ...

As this interstellar object approached its closest point to Earth, a massive radio telescope attempted to sniff out a ...

While most planets that we are familiar with stick relatively close to their host star in a predictable orbit, some planets ...