NASA’s Dawn spacecraft approaches protoplanet Vesta


NASA‘s Dawn mission to the doughnut-shaped asteroid belt between Mars and Jupiter, which launched in September 2007, is now approaching Vesta, a protoplanet that is currently some 143 million miles from Earth. Many surprises are…

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Columbia engineering study links ozone hole to climate change all the way to the equator


In a study to be published in the April 21st issue of Science magazine, researchers at Columbia University’s School of Engineering and Applied Science report their findings that the ozone hole, which is located over…

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