An undated artistic rendering shows an asteroid or comet striking near the Moon's south pole about 3.8 billion years ago, an ...
Scientists found that an asteroid impact carved two massive canyons on the moon in minutes. High-speed debris helped shape ...
They were dug out by debris sent violently aloft when an asteroid or comet struck the lunar surface 3.8 billion years ago.
Close to the moon's south pole ... larger than the asteroid that struck Earth 66 million years ago and doomed the dinosaurs. "When the impacting asteroid or comet hit the lunar surface, it ...
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