On this day in 1986, the U.S. space shuttle Challenger exploded 73 seconds after liftoff from Florida, killing all seven aboard, including a schoolteacher who had been chosen as the first American civilian to travel in space.
Soviet Nuclear reactor at Chernobyl explodes on April 26th causing release of radioactive material across much of Europe. The Space Shuttle Challenger disintegrates 73 seconds after launching, killing all seven astronauts on board. The Oprah Winfrey Show debuts
