The impact of an asteroid that about 65 million years ago caused the extinction of the dinosaurs is an event now known also outside of the scientific field. However, a study published in the journal “Geochemistry, Geophysics, Geosystems” reconstructs the impact of a much larger asteroid, with a diameter estimated to be between 37 and 58 km (23 to 36 miles), occurred about 3.26 billion years ago.