OTD…Jan. 13 and STS-54

#OTD in 1998…Discovery launched John Glenn’s return to space

#OTD in 1995…Discovery launched a Tracking and Data Relay satellite

The first crew to inhabit Skylab — Conrad, Weitz and Kerwin — launched today in 1973 for a 28-day mission that successfully made critical repairs, brought the station into operation and conducted solar astronomy, Earth resources and medical experiments.