OTD…Oct. 11 and STS-92

#OTD in 1995…Columbia launched on a microgravity science Spacelab flight

#OTD…In 2009, the final Hubble Space Telescope servicing mission launched

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