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“We think of impact events as being disastrous for life,” Harvard geologist Nadja Drabon explains, but one such impact by a meteorite more than 3 billion years ago could have been a lifesaver for ...

When a gargantuan space rock, estimated to be the size of four Mount Everests, crashed into Earth more than 3 billion years ago, many may assume that it would have wreaked havoc on a young planet.

What happens if an asteroid the size of a 15-story building crashes into the Moon in 2032? While the chances of the newly discovered asteroid 2024 YR4 hitting the Moon in seven years are slim – there ...