To save ourselves from a killer asteroid, first we have to find it. A spacecraft now under construction at NASA’s Jet Propulsion Laboratory in may be our best hope. The Near-Earth Object Surveyor is a ...

Surveyor, a $1.4-billion infrared telescope designed to detect asteroids and comets that could pose a threat to Earth.

In late 2024, astronomers spotted asteroid 2024 YR4 on a trajectory that could potentially threaten Earth. This observation ...

Meteorites are primarily stony chondrites, but also include iron-rich achondrites and pallasites. Studying meteors provides ...