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Clyde W. Tombaugh, an assistant at the Lowell Observatory in Flagstaff, Arizona, discovered Pluto. For decades, Pluto was considered the ninth planet of our solar system.
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When the Empire State Building opened on May 1, 1931, it was the tallest building in the world - standing at 1,250 feet tall.
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President-elect Franklin D. Roosevelt had just sat down after giving a speech at the Bayfront Park in Miami, Florida when five shots rang out
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Barrow and Parker were ambushed and killed on May 23, 1934 on a rural road in Bienville Parish, Louisiana.
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As the German passenger airship caught fire and was destroyed during its attempt to dock
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Before there was television, people used to turn on their radios to listen to music, hear talk programs, and to get news. On Sunday, October 30, 1938, millions of radio listeners turned on their radios and heard realistic sounding descriptions of an attack of Martians on the United States.
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WWII was a global military conflict lasting from 1939 to 1945, which involved most of the world's nations, including all of the great powers: eventually forming two opposing military alliances, the Allies and the Axis.
