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Scientists have identified the world's oldest asteroid crater in Australia, adding it may explain how the planet was lifted from an ice age.The asteroid hit Yarrabubba in Western Australia about 2.2 billion years ago - making the crater about half the age of Earth, researchers say.Their conclusion was reached by testing minerals found in rocks at the site.The scientists say the find is exciting because it could account for a warming event during that era.Coronavirus: Man Utd match in LASK behind closed doors was published in the journal Nature Communications on Wednesday.How did they date it?메이저사이트The crater was discovered in the dry outback in 1979, but geologists had not previously tested how old it was.Troy Parrott: The striker numerous Premier League clubs wanted, so will he play for Tottenham? : 'Asteroid strike was culprit'Splosh! How to make Coronavirus: La Liga, French golf club matches & Barca Winners League game behind closed down doors to billions of years of erosion, the crater is not visible to the eye. Scientists mapped scars in the area's magnetic field to determine its 70km (43 miles) diameter.