YR4, a potential “city-killer,” has a small chance of hitting Earth in 2032—but scientists say it might strike the Moon ...
Chilling animations depict the apocalyptic impact that “city-killer” asteroid YR4 2024 could have if it did hit Earth — while ...
New research shows that when an asteroid slammed into the moon billions of years ago, it carved out a pair of grand canyons ...
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