China’s Tianwen-3 Mars sample return mission could bring Red Planet rocks back to Earth as early as 2031—years ahead of ...

Asteroid 2024 YR4 currently has a 2.3% chance of striking the Earth on Wednesday, Dec. 22, 2032, according to experts from NASA and the International Asteroid Warning Network (IAWN).

Asteroid 2024 YR4 has a 0.0017% chance of hitting Earth, but media reports too often ignore the unlikelihood of impact in reports of near-Earth asteroids, a Tucson astronomer says.

The meteorite, designated S2, is about 200 times bigger than the dinosaur-killing impactor named Chicxulub. S2 hit Earth when ...