OTD…Jan. 28 and STS-51L

#OTD in 1985…Challenger suffered an engine shutdown on her way to orbit for a Spacelab mission

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

NASA’s first space station — the Skylab orbital workshop — was launched atop a Saturn 5 rocket today, May 14, in 1973.