Cosmonaut Alexei Leonov became the first man to walk in space in 1965, but the mission almost killed him.
On September 9, 1942, Japan tried and failed to bring WWII to the continental United States.
Gagarin's background made him stand out from his cosmonaut class of brilliant and talented pilots, and helped him become the first human in space.
On this day in 1973, Motorola inventor Martin Cooper made the world's first cellphone call.
Daisy Morris was just five when she stumbled upon fossils of an unidentified species of dinosaur on the Isle of Wight. The new dino now shares her name.
John Glenn's Friendship 7 flight was just what the Soviet Union needed to regain their momentum in space.
For a brief moment on John Glenn's orbital flight, NASA's first, it looked like the astronaut wouldn't make it home alive.
Even 76 years ago, the world was in love with the idea of a flying car, and Waldo Waterman was the first person to make it happen.
In 1956, rocket engineer Walter Dornberger imagined a world where we all traveled by spaceplane.
Happy Birthday, Grand Central Terminal.