Further observations ruled out an impact. The most infamous asteroid impact occurred 66 million years ago, when a six-mile-wide space rock triggered a global winter, wiping out the dinosaurs and ...

Named 2024 YR4, the asteroid has a 1.2% chance of hitting our planet on December 22, 2032, the European Space Agency and NASA have found. But that also means the space rock has a nearly 99% chance ...