OTD…June 3, 1965 and the first American walk in space

Space station commander Scott Kelly and Kjell Lindgren carried out a tedious seven-hour 16-minute spacewalk Wednesday, installing cables needed for a new docking mechanism, mounting insulation panels on a physics experiment to improve cooling and lubricating the latching mechanism of the station’s robot arm.

#OTD in 2005…Discovery launched on the first space shuttle mission after the Columbia tragedy

#OTD in 1998…The launch of Discovery on final shuttle-Mir docking mission