House-sized asteroid will pass by Earth at just above satellite altitude

A house-size asteroid will give Earth a near-miss on Thursday, giving experts a rare chance to rehearse for a real-life strike threat as it passes inside the moon’s orbit.

Dubbed 2012 TC4, the space rock will shave past at an altitude of less than 44,000km (27,300 miles) – just above the 36,000km altitude at which hundreds of geosynchronous satellites orbit the Earth.

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