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An asteroid impact that hit the Yucatan Peninsula killed off the dinosaurs has become a widely accepted hypothesis (Refer to Fig 1-1). It has been proposed by many scientists that the asteroid was “around 15 kilometers wide” (sciencedaily.com) and hit the Earth that is about a billion times stronger than the atom bomb that hit Hiroshima. This impact would create a chain reaction of events. The first reaction would be the shock from the impact itself. This would most likely eliminate a major population of the dinosaurs as there are not many species that can withstand an impact of that caliber. The second reaction would cause many particles to be lifted into the atmosphere due to the force of the impact. It would cause a “global winter, wiping out much of life on Earth in a matter of days” (sciencedaily.com). To prove their hypothesis of an asteroid impact, scientists have detected iridium levels to be high in geological samples. This piece of evidence is significant because iridium is mainly only abundant in space. Earth has a low concentration of this element. Another important link to an asteroid impact are the shocked quartz in geological records. Shocked quartz is only present in areas with atomic bomb testing and meteor impact sites and this is because shocked quartz are only created “when [quartz are] hit very quickly with a massive force” (sciencedaily.com). This hypothesis was slowly disproved, but recent studies have shown that due to data being misread, it is once again a possible hypothesis. With this amount of substantial evidence, it is no surprise that an asteroid impact is a widely accepted hypothesis