A planetary system 116 light-years from Earth has a peculiar pattern. It could flip the script on how planets form, ...

An international team of astronomers has discovered a distant planetary system that challenges long-standing theories of how ...

There have been questions about a mysterious ninth planet in our solar system for nearly a decade. Pluto was unseated as number nine in 2006. Now, a group of international researchers say they may ...

When you buy through links on our articles, Future and its syndication partners may earn a commission. A composite image comparing the relative sizes of our solar system's known dwarf planets, ...

This video explains how the solar system formed and why most planets move in the same direction, using basic physics and observations from astronomy to break it down clearly.

Astronomers are closing in on one of the most tantalizing possibilities in planetary science, evidence that a previously unknown world may be lurking in the outer reaches of the solar system. The ...

Astronomers have discovered the earliest seeds of rocky planets forming in the gas around a baby sun-like star, providing a precious peek into the dawn of our own solar system. It’s an unprecedented ...

A newly studied solar system breaks the usual planet pattern, raising fresh questions about how rocky and gas planets form.