An Asteroid Impact Could Wipe Out an Entire City – NASA's Planetary Defense Plans To Prevent a Catastrophe - SciTechDaily

A space security expert explains NASA’s plans to prevent a potential catastrophe. The Earth exists in a dangerous environment. Cosmic bodies, like asteroids and comets, are constantly zooming through space and often crash into our planet. Most of these are to…

A giant asteroid struck Earth and wiped out the dinosaurs 65 million years ago. A space security expert explains NASA’s plans to prevent a potential catastrophe. The Earth exists in a dangerous env… [+7977 chars]

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