How large was the asteroid that hit Earth and killed all the dinosaurs? NASA says it was THIS big - HT Tech

Ever wanted to know how big was the asteroid that killed all the dinosaurs and destroyed the Earth as it existed then? Thanks to NASA, we know the size of this Earth-killer asteroid.

While we all know that dinosaurs died because of a massive asteroid strike against the Earth, many of us still do not understand how an asteroid that impacted one local geographic location can kill a… [+2087 chars]

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