Close call: passing asteroid to test Earth’s warning systems

Via Mariëtte Le Roux AFPOctober 10, 2017 Paris (AFP) – A house-size asteroid will give Earth a near-miss Thursday, passing harmlessly inside the Moon’s orbit while giving experts a rare chance to rehearse for a real-life strike threat. Dubbed 2012 TC4, the space rock will shave past at an altitude of less than 44,000 kilometres (27,300 miles) — just […]

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