YR4 is a recently discovered near-Earth object (NEO) currently being closely monitored by NASA’s planetary defense teams.
The chances of an asteroid as large as the width of an NFL field striking Earth continue to tick up, according to NASA.
Could an asteroid hit Earth in 2032? NASA says there's a chance, but the odds keep changing. We asked two experts to break it ...
Legendary scientist Neil deGrasse Tyson has explained how NASA and other planetary defense bodies could deflect the potential ...
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