Tag: asteroid impact

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    New study finds a barrage of small impacts likely erased much of the Earth’s primordial atmosphere.
  • Image showing the remnants of a crater that UAlberta researchers theorize was left by a massive meteorite strike sometime in the last 70 million years. Colour variation shows metres above sea level. Credit: Glombick et al., 2014 / University of Alberta / Alberta Geological Survey
    Scientists have found what they believe to be evidence of a powerful, ancient impact event in Canada’s Alberta province.