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Meteor impacts are an inevitable part of being a rocky planet. The craters they leave behind are a window into the tumultuous history of Earth.

Image of Gosses Bluff taken from the ISS. NASA I think all craters are cool, I’m just going to start with that. I am very biased.

A well-documented asteroid (asteroid 1994 PC1) will pass some 1.2 million miles from Earth on Tuesday. It won't skim or buzz by Earth. It's not nearly an imminent threat. It's not something NASA would warn society about. And if the space agency was concerned enough to issue a warning, such an announcement would be unprecedented.