On this date…April 16 and Apollo 16

#OTD…The maiden launch of shuttle Endeavour in 1992 to rescue the Intelsat 603 satellite

#OTD in 1994…Discovery launched to develop new techniques for monitoring Earth’s environment from space…and in 2006…Construction of the space station resumed as Atlantis delivered a power-generating truss

#OTD in 2007…The launch of Atlantis with a power truss for International Space Station