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Scientists first spotted asteroid 2024 YR4 in December, initially calculating a record-high 3.1% chance of impact. While the ...
YR4 has a very small chance of striking Earth when its orbit briefly intersects our planet's in December 2032.
Before you start preparing for the worst, an update has since been issued by NASA's planetary defense, reading: "Observations made overnight on Feb. 19 - 20 of asteroid 2024 YR4 have further decreased ...
Astronomers will use the Webb telescope to closely monitor the size and trajectory of an asteroid that has a slim chance of ...