disaster
STS-134 is the 25th and final mission of the Space Shuttle "Endeavour", and the 134th and penultimate mission of the Space Shuttle Program. "Endeavour", NASA's youngest space shuttle, was originally built to replace the Space Shuttle "Challenger" after the 1986 
 that killed its seven crewmembers during the ill-fated launch of the STS-51-L mission. "Endeavour"'s first flight was STS-49 in May 1992.
Space Shuttle Endeavour launches for final time