How NASA Plans to Defend Earth: Crash a Probe Into an Asteroid

NASA is testing a system designed to protect the Earth from a massive meteor strike. WSJ science writer Robert Lee Hotz joins host Zoe Thomas to discuss how the technology works and what to expect from the test run now underway.
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NASA is testing a system designed to protect the Earth from a massive meteor strike. WSJ science writer Robert Lee Hotz joins host Zoe Thomas to discuss how the technology works and what to expect from the test run now underway.

Learn more about your ad choices. Visit megaphone.fm/adchoices