OTD…March 22 and STS-3 and STS-76

#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 1989, Discovery launched a new Tracking and Data Relay Satellite

Today in 1996…The launch of Columbia and the ill-fated Tethered Satellite System. Watch the liftoff: