For the first time in its history, humanity is assembling a coordinated system to find, track, and deflect asteroids that could threaten life on Earth. The architecture involves a space-based infrared ...

China is recruiting for a planetary defense force amid growing global focus on the risk of asteroids colliding with Earth.

Scientists discussed the threat of asteroids at a recent conference in Phoenix. Here's what they said.

She’s worried about the a-rock-alypse. A planetary defense expert is warning that humanity is defenseless against up to 15,000 undetected near-Earth asteroids that have the potential to take out a ...

“What keeps me up at night is the asteroids we don’t know about," said NASA's planetary defense chief.

NASA planetary defense experts report that mid-size near-Earth asteroids could cause regional damage, with detection and deflection remaining limited, according to New York Post and AAAS reports.

NASA planetary defense experts warn that up to 15,000 undetected asteroids could devastate a major city on Earth.

A NASA planetary defense officer warns thousands of near-Earth asteroids capable of destroying a city remain undetected.