ASTR 101 Chapter Notes - Chapter 3: Lake Cheko, Ground-Penetrating Radar, Shuvalov
5 Sep 2016
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Tunguska event: the largest impact of a cosmic body to occur on earth during modern human history. Effect of blast reached northern europe and central asia. Massive, silvery clouds and brilliant, colored sunsets on the horizon. Epicenter: close to the river podkamennaya tunguska, an uninhabited area of swampy taiga forest that stays frozen for 8-9 months of the year. Scientists have tried to figure out what caused this event. Some say it was an asteroid or comet, but no evidence of it on earth. Studying said event is important because could have effect on earth. : mars-sized object hit earth 4. 4 billion years ago, creating our moon. By using satellite observations of meteorites and acoustical data that record cosmic impacts on the surface of earth, peter brown and co-worker were able to estimate rate of small and large impacts. Average frequency of tunguska-like asteroidal collisions range from one in 200 years to one in.
