Massive Asteroid Crater Detected Under Greenland Ice Sheet
(WorldNews Denmark)

An unusually large asteroid crater measuring 19 miles wide has been discovered under a continental ice sheet in Greenland, Gizmodo reports. Roughly the size of Paris, it´s now among the 25 biggest known asteroid craters on Earth. An iron-rich asteroid measuring nearly a kilometer wide (0.6 miles) struck Greenland´s ice-covered surface at some point between 3 million and 12,000 years ago, according to a new study published today in Science Advances. The impact would´ve flung horrific amounts of water vapor and debris into the atmosphere, while sending torrents of meltwater into the North Atlantic - events that likely triggered global cooling (a phenomenon sometimes referred to as a nuclear or...