On January 18, 1965, Boris Volynov nearly died on his way home form orbit, and the Soviets kept it secret for over 30 years.
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.
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.
In 1956, rocket engineer Walter Dornberger imagined a world where we all traveled by spaceplane.
Astronomers have found something more interesting at the center of our Milky Way galaxy than just a black hole: a star orbiting that black hole at the record-breaking speed of 3,100 miles per second. It takes less than twelve years to make one full orbit, but its speed isn't its only scientifically interesting aspect.
NASA's Curiosity rover is at a standstill, but thankfully it's not because its wheels are stuck. The rover is stopped for science: It's arrived at a site called Rocknest, an eight-by-16-foot area with ample loose material. Mission scientist have decided to stop here on the way to Glenelg for the mission's first scoop of soil for analysis.
Mars may be the first planet in the solar system to have a robot for mayor. (Something that was already predicted by Reddit.) NASA's Curiosity rover just checked-in on Foursquare on Mars and, unless Opportunity gets its act in gear, could continue to check-in unopposed and win the coveted spot of mayor.