July 20, 1969: Lunar landing of Apollo 11

#OTD in 2009…Endeavour launched to complete the Japanese segment of the International Space Station

#OTD in 1997…Atlantis launched on the seventh joint docking mission with Russia’s space station Mir

#OTD in 2007…NASA’s Dawn probe launched to explore the uncharted worlds of Vesta and Ceres in the heart of the asteroid belt.