Alison Gibbings and Massimiliano Vasile, aerospace engineers at the University of Strathclyde, UK, new solution is a 500-kilogram swarm of fingernail-sized spacecraft would, they calculate, deflect a ...
In February 2013, an asteroid about the size of a house punched its way through Earth’s atmosphere and broke apart over the city of Chelyabinsk, Russia. The blast was so strong, it left a bright ...
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