June 16

1963 – On the Soviet space program's Vostok 6 mission, cosmonaut Valentina Tereshkova becomes the first woman in space.
1972 – Actor John Cho (Hikaru Sulu in Star Trek 2009) is born.
2012 – The United States Air Force's robotic Boeing X-37B spaceplane returns to Earth after a secret 469-day orbital mission.