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

The object is hurtling towards the Earth at a zippy 12,616 miles per hour, according to data from the space agency.

NASA's top planetary defense expert reveals the biggest threat isn't Hollywood-style doomsday rocks, but undiscovered 'city-killer' asteroids. While large and small threats are known, an estimated 25, ...

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 ...

The discovery is just the latest to come from the asteroid sample, which dates back to the dawn of the solar system.

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

Early last year, asteroid 2024 YR4 caught the public’s attention as its chances of hitting Earth in the near future climbed ...

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.

If an asteroid is on a collision course with the moon, what should humanity do? Try to nudge the space rock out of the way before it strikes? Obliterate it with a nuclear explosion? Such a cosmic ...

Asteroid 2025 YU15 will sweep past Earth at remarkable speed this February, drawing global attention and raising questions about how closely scientists are watching the next celestial visitor.

The Orionid meteor shower will soon peak, and conditions could allow for a night full of shooting stars. Folks who missed the Draconid meteor shower will have another chance to see meteors shoot ...