Are 'city-killing asteroids' a threat? See what experts are saying

While not an official term, "city-killing asteroids" refers to asteroids large enough to significantly damage cities if they ...
Greek Reporter

NASA Says It Cannot Stop 15,000 Undetected Asteroids Coming Toward Earth

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

The Asteroids Approaching Earth That Keep NASA Scientist Up at Night

"We would not have any way to go and actively deflect one right now," warns the scientist who led NASA's DART mission.

NASA warns of 15,000 city-killer asteroids near Earth

Imagine a rock the size of a football stadium hurtling through space at thousands of miles per hour, heading straight for a major city, and we have no way to stop it. NASA has just issued a sobering ...
PRIMETIMER

Planetary defense expert warns mid-size asteroids could cause regional damage

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.