iHeartRadio & HowStuffWorks

On this day in 1986, a chemical explosion in a nuclear reactor at the Chernobyl nuclear power plant in Soviet Ukraine triggered one of the worst nuclear disasters ever. / On this day in 1920, astronomers Harlow Shapley and Heber Curtis presented their opposing points about the scale of the universe in an event sometimes called “The Great Debate.” Learn more about your ad-choices at https://www.iheartpodcastnetwork.com

https://www.listennotes.com/e/d86fd7a2ca2e4b1886bf7150856d1c84/