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 expectations -- and suggests these faraway worlds formed in a manner never ...

The Committee on Astrobiology and Planetary Science (CAPS) provides an independent, authoritative forum for identifying and discussing issues in astrobiology and planetary science with the research ...

The Planetary Boundaries framework is a pivotal tool for tackling the climate crisis and safeguarding humanity's future on Earth. For the first time, the full story of the Planetary Boundaries is now ...

This study will describe how international and national planetary protection policy has been formulated and adopted and identify associated lessons to inform future policy development. The National ...