The meteorite disaster that occurred 66 million years ago caused 75 percent of the species, including dinosaurs, to disappear. Scientists have called the Cretaceous-Tertiary (K-T) extinction at the time of the disaster resulting in the extinction of dinosaurs. Scientists think that the meteorite striking that formed the 150 km diameter Chicxulub crater in Mexico’s Yucatan Peninsula caused the generation of dinosaurs to end. After the meteorite hit the Earth, there was a long, dark and cold period on Earth. During this period, most of the living species disappeared. Scientists are still unsure which of the effects that occurred during this period actually caused the extinction of living species. A new article published in Geophysical Research Letters argues that the main reason for the K-T disappearance was the long dark period after felatin. In the new study, scientists used various Earth modeling on the computer to understand what happened after the meteorite hit Earth. In the study carried out with the revitalization of the world models, it was observed that a large amount of sulfuric compound, smoke and heat were mixed into the atmosphere due to the meteorite hitting the Earth. This layer of smoke and soot caused a great dark period on Earth. This layer prevented the sun rays used in photosynthesis from reaching the Earth. Earth scientist Clay Tabor from the University of Connecticut said that low light levels could be the basis for extinction. Tabor says that similar things can happen in a nuclear winter that can happen after a nuclear war. Large amounts of ash were sprayed into the upper layers of the atmosphere due to Chicxulub meteorite strikes. These ashes then rained hot back to the earth. Hot ashes caused a large amount of forest fire. Smoke and soot from forest fires occurring globally caused a dark and cold period in the atmosphere. Previous studies have revealed that the temperature has dropped at least 26 ° C globally during this period. The temperature remained below 0 ° C throughout the world for 3 to 16 years. This long cold period was thought to have caused much of the living species to disappear. But what’s more deadly than scientists is that the levels of sunlight drop down to 1 percent of pre-disaster, and that’s why photosynthesis comes to a halt. With the disappearance of photosynthesis, the food chain broke down and a global disaster occurred. New research shows that there is not a big cooling down in the same way all over the world. The researchers stated that cooling in areas close to the poles was not significant. Clay Tabor said that a great cooling did not occur at high latitudes. Tabor stated that this cooling is of secondary importance for almost two years compared to stopping photosynthetic activity.
