‘City Killer’ Asteroid’s Earth Impact Risk Rises and Falls Again
The asteroid 2024 YR4 probably won’t come nearly as close to Earth anytime soon as the space rock in this artist’s illustration. But astronomers can’t yet rule out a potentially catastrophic encounter projected for December 2032.
YR4 is a recently discovered near-Earth object (NEO) currently being closely monitored by NASA’s planetary defense teams.
We all know that asteroids are out there, that some of them come dangerously close to Earth, and that they've struck Earth ...
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