1961

Events

• Astronaut Yuri Gagarin becomes the first Human in space. He makes a single low Earth orbit before parachuting to the ground in his craft.

• Astronaut Alan Shepard is the second Human in space.

• The "Drake equation" is written by Frank Drake.
  This equation is a probabilistic argument, used to estimate the number of active, communicative extraterrestrial civilizations in the Milky Way Galaxy.

1960

[[20th Century]] 1960s

1962