OTD…June 17 and STS-51G

#OTD in 2002…Atlantis launched the outward expansion of the space station’s truss backbone

#OTD in 2009…Endeavour launched to complete the Japanese segment of the International Space Station

On this day in 2010, Atlantis on her next-to-final mission launches with Russia’s Rassvet mini module for the International Space Station