YR4, a near-Earth asteroid has a one-in-45 chance of hitting Planet Earth in December 2032, NASA and the European Space ...

NASA is using its most powerful space telescope to study the true size of the "city-killer" asteroid that has a one-in-43 ...

"It dropped to zero," Betts said. "It’s a funny thing about homing in on an asteroid and calculating its path, future position, and probability of impacting Earth – it will often appear risky ...