A NASA scientist is warning that Earth currently has no reliable way to stop thousands of so-called “city-killing” asteroids that could one day strike the pla ...

Daichi Fujii from the Hiratsuka City Museum in Japan captured a meteor impact the moon with multiple telescopes. Credit: ...

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

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

NASA's head of planetary defence, Dr Kelly Fast, has issued an unsettling update on thousands of ‘city-killer’ asteroids that could hit Earth.

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

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.

Kelly Fast, a planetary defense officer at NASA, says there could be 15,000 undetected asteroids that have the potential to take out a city.

NASA's Curiosity rover, which launched in 2011 from Florida, found signs of organic material that on Earth is most often ...