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.
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Scientists fear massive city-killer asteroids are still slipping by
Nearly two decades after the U.S. Congress ordered NASA to find 90% of the asteroids large enough to destroy a city, the ...
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.
Two NASA scientists claim Earth is at risk from over 25,000 unknown asteroids that are yet to be discovered. If one of them moves towards the planet, no amount of preparation or a mission like DART ...
Scientists may be one step closer in their hunt for signs of past life on Mars after the Curiosity rover's latest find.
NASA officials warn that around 15,000 'city-killer' asteroids remain undiscovered, many lurking in a stubborn observational blind spot near the sun.
An asteroid discovered in December 2024 and named YR4 has a small chance of hitting Earth in 2032. But scientists keep ...
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 ...
Thousands of “city killer” asteroids remain undetected, NASA warns, and no ready spacecraft exists to stop one. A recent close call exposed gaps that scientists say still leave Earth vulnerable.
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