* Astronomy

Louis Alexander Slotin (December 1, 1910 - May 30, 1946) was a Canadian physicist and chemist who took part in the Manhattan Project, the secret US program during World War II that developed the atomic bomb.
On May 21, 1946, Slotin accidentally began a fission reaction, which released a burst of hard radiation. He was rushed to a hospital, and died of radiation sickness nine days later on May 30, the second victim of a criticality accident in history.
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