The documents describe the analysis of Pantasma, which was documented as a nine-mile-wide crater left by an asteroid some 800,000 years ago, and it produced the equivalent of 660,000 megatons when it fell to Earth. 'We have focused attention on four complex impact craters that span the past ~1.0 Ma of Earth history, mostly within tropical regions, with differing target rock characteristics,' reads the presentation. The sites included Pantasma in Nicaragua, Bosumtwi in Ghana, Iturralde in Bolivia and Zhamanshin in Kazakhstan. Using new high-resolution imagery of four craters made over the past one million years, Gavin could map them in 3D. The team conducted the study as part of planetary defense research but uncovered more than they could have imagined. Garvin presented the findings at the Lunar and Planetary Science Conference last week, saying, 'It would be in the range of serious crap happening.' Experts reanalyzed four impact sites of asteroids that hit over one million years and found not only that they were larger but also more powerful
NASA scientists reveal Earth could be at a higher risk of asteroid impact than previously believed.
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