Some people see the sun as red, yellow or orange. In fact, the sun appears white due to a mixture of different colors. But 200 years ago, people on earth once saw the sun as blue. But why? Scientists have not been able to solve this mystery for so long. After a recent study, scientists in Scotland claim that they have solved the mystery of 200 years ago.
Researchers at the University of St. Andrews in Scotland say that a massive volcanic eruption was behind the change in the color of the sun in the Earth's atmosphere in 1831. The eruption created a huge plume of the chemical sulfur dioxide, which spread into the atmosphere. This reduced global temperatures that year. As a result of this event, various strange climatic conditions were created in the atmosphere of the cooled Earth.
The research, published in the journal Proceedings of the National Academy of Sciences (PNAS), says the eruption of the Zavaritsky volcano on Shimushi Island, a disputed territory between Russia and Japan, changed the world.
Researchers have confirmed the results of their research by analyzing ice cores from 1931. However, they say that there is no written record of direct observation of the 1831 event. This is because the area of the volcano was remote and uninhabited.
"We analyzed two types of ash, volcanic ash and ice sheet ash, in the laboratory," said Will Hutchinson, co-author of the study, in a statement. "That's when we discovered that incredible moment."
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