That one was estimated to be about 6.2 miles (10 kilometers) in diameter and marked the last known large asteroid to hit our world. Planet killer asteroids are space rocks that are 1 kilometer across ...

Sixty-six million years ago, an asteroid thought to be around 12 kilometers (7.4 miles) in diameter impacted the Earth, ...

Asteroid 2024 YR4 has grabbed headlines lately ... and the object is big enough to cause a planet-wide disaster – over 1 km (0.6 miles) wide. A few times a year, astronomers discover objects ...

YR4 has a 2.3% chance of hitting Earth in the year 2032. But according to new estimates, it may have an even smaller chance of hitting the moon instead.

A 140-meter-wide asteroid would leave a crater of 1 to 2 km in diameter and would cause mass casualties if over a metro area or state.

That one was estimated to be about 6.2 miles in diameter and marked the last known large asteroid to hit our world. Planet killer asteroids are space rocks that are 1 kilometer across or larger ...

February, asteroid 2024 YR4 was spotted and originally believed to have a 3.1 per cent of hitting Earth in 2032. Further calculations revealed this was not the case.

Sensational "city killer" headlines aside, NASA and the European Space Agency reported the asteroid "has a very small chance" of Earth impact.

That one was estimated to be about 6.2 miles (10 kilometers) in diameter and marked the last known large asteroid to hit our world. Planet killer asteroids are space rocks that are 1 kilometer ...