Free Astronomy Magazine January-February 2021

29 JANUARY-FEBRUARY 2021 ASTRO PUBLISHING nario for the emergence and, even less, the proliferation of life; but some studies conducted in recent decades have indicated that those catastrophic events may have cre- ated, precisely at the impact sites, the ideal conditions for the biochem- ical processes that transformed or- ganic compounds into life. The main proponent of this scenario is David Kring (Lunar and Planetary Institute), who developed the im- I n this video, a recon- struction of the Chicx- ulub event, which 66 million years ago led to the mass extinction that marked the end of the Cretaceous, the last pe- riod of the Mesozoic era. The extinction in- volved 75% of the living species on Earth. [SCI Discovery Science]