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The potential effects if a massive asteroid struck Earth
Greenland's only US military base is (quietly) getting a massive upgrade Trump is threatening to attack a country that ...
Sciencing on MSN
The 13 biggest asteroids to ever hit planet Earth
While Earth was famously hit by a meteor that killed off the dinosaurs, many others have also hit our planet, many of them leaving huge scars in their wake.
Scientists have discovered a “record-breaking” asteroid that is nearly the size of eight football fields. The object, known ...
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