'What keeps me up at night': NASA scientist warns of undetected city-killer asteroids

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

The asteroids approaching Earth that keep NASA scientist up at night

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

NASA warning over 'city killer' asteroids which 'keep space chiefs up at night'

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

NASA scientist warns there’s no way to stop thousands of city-killing asteroids from striking Earth: ‘It keeps me up at night’

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 ...
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Planetary scientist admits city-killer asteroids keep her 'up at night' as NASA can't stop them

NASA has since downgraded that possibility to zero percent, but the asteroid continues to be tracked by NASA's James Webb Space Telescope this week as there's a 4 percent chance it could collide with ...

NASA scientist issues stark warning about 15,000 undetected asteroids that could destroy cities: 'Keeps me up at night'

A planetary defense expert working for NASA warned that humanity has no defense against up to 15,000 undetected near-Earth asteroids that could wipe out a city.

NASA scientist's terrifying warning asteroid 'we know nothing about' could wipe out city

A top astronomer responsible for defending the Earth against asteroids has revealed what keeps her up at night — thousands of “city killer” space rocks that remain undetected. Dr Kelly Fast, NASA’s ...
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NASA's Artemis 2 Astronauts Tackle Emergency Spacecraft Escape Drill At Night

NASA Artemis 2 crew Christina Koch, Reid Wiseman, Victor Glover and Jeremy Hansen completed a dry dress and emergency egress rehearsal at Kennedy Space Center in Florida. Credit: Space.com | footage ...