NASA and ESA are monitoring asteroid 2024 YR4, with an estimated size of up to 328 feet and a 1.2% chance of impacting Earth.
YR4 might force NASA to plan the first-ever space mission to push an asteroid away from Earth. Most likely, though, it's a ...
Astronomers have retracted the discovery of a new asteroid after realizing the object was the remains of Elon Musk's Tesla ...