World’s Second Largest Impact Crater Was Made by a Comet
ins_user2016-10-22T09:26:49+00:00Researchers have long puzzled over what created the giant, elliptical hole called the Sudbury Basin in Ontario, Canada. At 62 kilometers long, 30 kilometers wide, and 15 kilometers deep, it’s the second largest impact crater on the planet. Now, researchers studying the chemistry of the crater and its shattered rocks say it was made by [...]