NASA head warns: Expect a major asteroid impact in your lifetime

NASA administrator Jim Bridenstine thinks it’s time to start taking the threat of an Earth-altering asteroid impact seriously. In a speech today at the International Academy of Astronautics Planetary Defense Conference, Bridenstine opened his keynote with a warning about what’s to come. “We have to make sure that people understand that this is not about Hollywood, it’s not about movies,” he said. “This is about ultimately protecting the only planet we know, right now, to host life and that is the planet Earth.” Bridenstine acknowledged that a large asteroid colliding with Earth is met with a sort of “giggle factor,”…

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