The new home of NASA's retired space shuttle Endeavour, the Samuel Oschin Air and Space Center, has reached new heights and the California Science Center is celebrating with a "topping off" ceremony.
Signed steel beams 'top off' L.A. home for space shuttle Endeavour
Source: space
Source Link: https://www.space.com/topping-off-oschin-air-space-center-space-shuttle-endeavour