Asteroid impact threat estimates improved for the Earth and the moon

Asteroid 2024 YR4, first discovered in December 2024, triggered a first-ever notification from the International Asteroid Warning Network (IAWN) on January 29, 2025. The...

Atmospheres of new planets might have unexpected mixtures of hydrogen and water

All planets are made of gas, ice, rock and metal, and models of how planets form usually assume that these materials don't react chemically...

Earth 1, asteroids 0: The next generation of planetary defense takes shape at NASA’s Jet Propulsion Laboratory

There is a non-zero chance that somewhere in the nearby solar system is a rock that might kill us all. This stony assassin may well...