NASA says there are a little over 16,000 comets and asteroids occupying our planet's neighborhood. Fortunately, the space agency also says the probability of a major collision is quite small. Host Rick Pantaleo and his guests talk about asteroids and other near Earth objects, the odds of a serious impact event and what can be done to protect our planet from a catastrophic strike.
Science Edition: Asteroids - Press Conference USA 1555351
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