Evidence that rocky planets beyond Jupiter formed as rapidly, and at the same time, as the inner planets could transform our ...

This artist’s concept depicts one of the solar system’s inner planets slamming into Earth after being nudged on a collision course by a passing star. Such a world-shattering cataclysm is ...

Almost 20 years after Pluto was infamously downgraded from its status as a planet, scientists now believe they have discovered a new planet in our solar system.

Learn about the solar system from a pair of real space museum curators in sci-fi game Elite Dangerous, as Abbie MacKinnon and Laura Joy Pieters of the London Science Museum give a guided tour of ...

Our solar system may have a ninth planet after all, following the declassification of Pluto nearly two decades ago, researchers say. ABC News. Live. Video. Shows. Shop. Log In. Stream on.

The solar system remains a dynamic and mysterious place. Every new object like 2017 OF201 adds a piece to the puzzle. Whether or not we ever actually solve the mystery of Planet Nine , though ...

Jupiter is not only the largest in the solar system, but is so humongous that it's more than twice as massive as the other planets combined.. The gas giant is about 11 times wider than Earth alone ...

A new study has looked into the possibility that our Solar System could capture and provide a home for a rogue planet as they hurtle through the galaxy, alone. In 2017, astronomers at the Pan ...

This process, called accretion, is how everything in the solar system – planets, moons, comets and asteroids – came into being. Telescopes can see young solar systems being born.