Technology
Indianapolis 500
On May 30, 1911, the Indianapolis Motor Speedway held its first 200-lap, 500-mile race, dubbed the Indianapolis (or Indy) 500.
First Man in Space
On April 12, 1961, Soviet cosmonaut Yuri Gagarin became the first person to travel into space.
The American Chemical Society
On April 6, 1876, the American Chemical Society was founded in New York City.
Happy National Doctors’ Day
March 30 is celebrated as National Doctor’s Day in the United States to commemorate Dr. Crawford W. Long’s use of ether for the first time on this date in 1842.
American Radio Relay League Saves Lives
On March 28, 1964, amateur radio operators provided essential emergency communications in the wake of a devastating earthquake in Alaska.
The Grand Coulee Dam
On March 22, 1941, the Grand Coulee Dam first began producing power.
First US Inventors’ Day
On February 11, 1983, America celebrated its first Inventors’ Day.
Massachusetts Becomes 6th State
On February 6, 1788, Massachusetts became the 6th state to join the Union.
Launch of Explorer I
Late in the evening of January 31, 1958, the US launched its first satellite, Explorer I.