Mystery Crater in Antarctica: Meteor Impact in 2004
An enormous impact crater thought to have been created by a meteorite the size of a house smashing into Earth has been discovered in the Antarctic ice sheet.
Scientists conducting a routine aerial research flight above East Antarctica noticed a strange ring-like structure in the normally flat and featureless ice.
It appeared to be a series of broken ‘icebergs’ surrounded by a 2km (1.24 miles) wide circular scar, surrounded by a few other smaller circular scars in the ice.
One reported a series of infrasound - low frequency sound capable of traveling huge distances below the limit of human hearing - detected on 2 September 2004.
Six detectors around the world detected this infrasound thrown out by the exploding meteorite, allowing scientists to pinpoint it somewhere over East Antarctica.
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