ScienceCast 220: Planetary Defense

published 3 years ago

Planetary defense. Presented by science at NASA. Dinosaurs were fearsome creatures. Some had fixed scales sharp teeth and in many cases lightning fast reflexes. One thing they didn't have. A planetary defense office. When an asteroid targeted earth 65000000 years ago. It took those masters of earth by complete surprise. Well we know of no large object that is on a collision course with earth in the next 0 years descendants of survivors from that catastrophic impact are determined not to make the same mistake. In 2016 humanist Strummer's now routinely scan the heavens for signs of potentially hazardous objects. When one is discovered alerts are issued to observers around the world space rocks cannot easily disappear into the blackness of space. NASA funded search ...

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