The curious minds at What If imagine the largest asteroid ever hitting Earth today, revealing impact devastation, shockwaves, ...

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, ...

The curious minds at What If explore the catastrophic impact if the largest asteroid struck Earth without warning, revealing the immediate destruction and long-term planetary consequences.

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.

In a new paper, an international team of researchers revisited the idea of blowing up an incoming asteroid with a nuclear ...

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

NASA scientists recently expressed alarm over the potential threat posed by approximately 15,000 undetected asteroids capable ...

An asteroid the size of a 10-story building could collide with the Moon ...

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 ...