The asteroid 2024 YR4 probably won’t come nearly as close to Earth anytime soon as the space rock in this artist’s ...
The asteroid's odds of smacking Earth have gone up in recent days, but that number is not set in stone. There's a lot still ...
YR4: everything to know about the potential "city killer" space rock that has a 2.3% chance of striking Earth on Dec. 22, ...
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