These days we freak out whenever some dinky bollide explodes in the sky over Russia. But scientists have now reconstructed the effects of an enormous 3.26-billion-year-old asteroid impact on Earth that boiled the oceans, turned the sky red hot, and generated a half-hour-long earthquake that shook the planet.
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The popular theory that Mexico's Chicxulub Crater, discovered in 1978, holds the clue to the demise of the dinosaurs, along with some 65 percent of all species 65 million years ago, has been confronted by a serious challenge from Gerta...
L'171impresa187 della sonda Chang'e 2: l'incontro col roccione 232 avvenuto a circa sette milioni di chilometri dalla Terra
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