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View Full Version : Asteroid That Dwarfed Dinosaur-Killer Punched Earth 3 Billion Years Ago. Study Says



Fraser
2014-Apr-10, 04:40 PM
Early in Earth’s history, a killer asteroid smashed a hole in our planet about 300 miles (500 kilometers) wide, which is greater than the driving distance between Washington and New York City, a new study says. The space rock set off a cycle of destruction that sounds like your worst nightmares. That one reported collision […]

More... (http://www.universetoday.com/111103/asteroid-that-dwarfed-dinosaur-killer-punched-earth-3-billion-years-ago-study-says/)