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A Esquina do Desencontro

Histórias de Desencontros Ficcionais (ou Não) na Esquina da Vida

SPACE Huge Meteor Explosion a Wake-Up Call for Planetary Defense

THE WOODLANDS, Tex.—Back in late 2018 Earth dodged a bullet. Well, almost—a hefty space rock streaked through the upper atmosphere, detonating with the power of a nuclear bomb over an isolated stretch of the Bering Sea, between Russia and Alaska.

The blast occurred roughly 16 miles above the ocean, creating a high-altitude airburst with perhaps 40 percent of the energy released by the destructive February 2013 meteor over Chelyabinsk, Russia.

This late-breaking bombshell was unveiled here by Kelly Fast, NASA’s Near-Earth Object Observations program manager, during a media briefing on the agency’s planetary defense programs prior to the start of this week’s 50th Lunar and Planetary Science Conference.

read more in www.scientificamerican.com

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