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

Planetary systems in the Milky Way galaxy tend to follow a particular pattern: rocky planets toward the center, closest to ...

By Will Dunham WASHINGTON, Feb 14 (Reuters) - Astronomers have observed a planetary system that challenges current planet ...

A closer look at the planets around a star called LHS 1903 may just flip our understanding of how planetary systems form.

The fourth planet in the system is a rocky world, while the second and third ones are gas planets.

Surprised astronomers said Thursday they have discovered a star with planets in a bizarre order that defies scientific expectations – and suggests these faraway worlds formed in a manner never seen ...

The solar system does not end neatly at Neptune’s orbit. This episode reveals the vast, invisible structure of icy debris beyond the known planets, shaped by gravity and time. From scattered objects ...