Near-Earth asteroids & plotting witches In antiquity, a near-Earth asteroid's flyby rippled our planet's landscape, roiled its seas, and changed the course of rivers. A portent foretold this event, which would rend the Earth and release the dark denizens of the Netherworld. So the ancients built in the Egyptian Western Desert a gate to seal off their escape. 4, 500 years later, the asteroid returned. Hogtied world agencies, tripping over minut...
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