An inside-out planetary system around the star LHS 1903 is turning everything that astronomers know about planet formation upside down.

Surprised astronomers said Thursday they have discovered a star with planets in a bizarre order that defies scientific ...

I'm a planetary scientist who was born the year of Sputnik's launch. Over the course of my 40-year career, I've witnessed not one but at least five separate revolutions that fundamentally transformed ...

Any project, supported or not by a committee, that is currently being worked on or is considered active, and will have an end date. The Committee on Astrobiology and Planetary Science (CAPS) provides ...