Newslink: It's Time to Get Serious About Asteroid Threats, NASA Chief Says
NASA Administrator Jim Bridenstine had been a congressional representative for just one month when a large asteroid fell through the atmosphere and exploded over the Russian city of Chelyabinsk, flashing brighter in the sky than the sun — and that experience has clearly stuck with him.
https://www.space.com/asteroid-threat-planetary-defense-nasa-chief.html

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