When we think of Earth as the cradle of life, it’s easy to imagine a gentle process that led to oceans, air, and fertile ground. But new research suggests that our planet’s habitability may actually ...

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 ...

NASA's planetary defense has a 45,000 MPH blindspot. Discover why a 7-ton meteor exploded over Ohio with the force of 250 tons of TNT without any early warning.

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 ...

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 ...

On the evening of January 21, a remarkable astronomical event will take place as six planets, Mars, Jupiter, Uranus, Neptune, ...