"Up to 10% of the lunar ejecta could reach Earth within days," said Paul Wiegert, a planetary scientist and lead author of ...

An extraordinary celestial event could unfold in the night sky in less than a decade if an asteroid passing Earth collides ...

The 2024 YR4 is estimated to be the size of a 10-story building. Of course, NASA officials haven't really dialed in on the asteroid's size yet, thanks to the distance and rate of speed it's ...

Asteroid 2024 YR4 made headlines earlier this year when its probability of impacting Earth in 2032 rose as high as 3%. While an Earth impact has now been ruled out, the asteroid's story continues.

The observations allowed NASA and the ESA to conclude that asteroid 2024 YR4 measures anywhere from 174-220 feet, or about the size of a 10-story building, the U.S. space agency said in a blog post.