OTD…July 23 and STS-93

#OTD in 1985…Discovery launched to deploy three satellites and rendezvous with another for daring repair

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

#OTD in 1985…Atlantis launched on her maiden voyage as a new orbiter joined the shuttle fleet