Scientists discover a 8-kilometre wide undersea crater created as the dinosaurs disappeared - CTV News

An asteroid from space slammed into the Earth's surface 66 million years ago, leaving a massive crater underneath the sea and wreaking havoc with the planet.

An asteroid from space slammed into the Earth's surface 66 million years ago, leaving a massive crater underneath the sea and wreaking havoc with the planet. No, it's not that asteroid, the one that… [+4751 chars]

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