NASA just smashed a spaceship into an asteroid on purpose. Here are 13 facts about the mission and why it may just help save humanity one day.

NASA just smashed a spaceship into an asteroid on purpose. Here are 13 facts about the mission and why it may just help save humanity one day.

Business Insider

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The experiment is a first-of-a-kind test to defend us against space rocks that may one day hurtle towards Earth.

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