A new study suggests yet another theory for a possible extra planet in our solar system, likely of a size between Mercury and ...

An international team of researchers has just revealed the existence of three Earth-sized planets in the binary stellar ...

What's special about Chiron's rings is that they're still forming; this marks the first time astronomers have ever seen a ...

A new study has proposed the existence of Planet Y, an alternative Planet Nine candidate that is smaller and closer to Earth ...

Researchers are studying eccentric warm Jupiters, giant exoplanets that follow odd, elongated orbits unlike anything in our solar system.

Our solar system is a smashing success. A new study suggests that from its earliest period—even before the last of its nebular gas had been consumed—Earth's solar system and its planets looked more ...

What Makes Our Solar System Special? SNL’s cold open mocks Trump, Hegseth in 51st season premiere He made an ‘illegal' film in Iran. Now the U.S. government is preventing him from coming to the Bay ...

Astronomers have discovered 2017 OF21, a distant dwarf planet candidate located about 90 times farther from the Sun than Earth, making it more than twice as far as Pluto. With a highly elongated orbit ...

Scientists have shown that Earth’s basic chemistry solidified within just three million years of the Solar System’s formation. Initially, the planet was barren and inhospitable, missing water and ...