A NASA scientist has warned that thousands of city-killing asteroids could strike Earth, and there’s currently no defense ...

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

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 ...

NASA has made an alarming admission, revealing it has no idea where thousands of ginormous asteroids are currently located. The space rocks have terrifyingly been dubbed 'city killers' due to their ...

"We don’t know where they are,” said NASA’s planetary defense officer Kelly Fast at the AAAS conference in Arizona this week.

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

Around 15,000 mid-sized asteroids, known as 'city-killers', are unaccounted for as they zoom around space close to planet ...

While the technology still needs significant work, a new analysis of meteorites points to valuable targets in the solar ...

NASA officials warn thousands of undetected “city killer” asteroids may be circling near Earth. With limited deflection tools ready, are we prepared if one suddenly shifts onto a collision course?

A new study analyzes three asteroid and two meteorite samples to see if space rocks smacking into Earth could’ve helped ...

Space around the Sun contains far more than planets. Scattered through it are smaller bodies made of rock, metal, ice and ...

Blasting meteorite samples with CERN’s Super Proton Synchrotron, the team found that the material "became stronger". That ...