Astronomers were left less than impressed when they uncovered the truth about an asteroid they'd been keeping an eye on. On ...
YR4 might force NASA to plan the first-ever space mission to push an asteroid away from Earth. Most likely, though, it's a non-threat.
Researchers say there’s a 1.3 percent chance that the space rock 2024 YR4 could strike our planet — but not until December ...