OTD…Final launch of Endeavour five years ago

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

#OTD in 2012…Shuttle reaches retirement roost in sunny SoCal

The last space shuttle external tank in existence, headed from the New Orleans manufacturing plant to the California Science Center for the vertical launch pad display of the retired orbiter Endeavour, has passed through the Panama Canal.