It cost $196billion over 40 years, ended the lives of 14 astronauts and managed to make less than half the flights promised. But I think the same complexity is what makes them beautiful, he said. By comparison, 40 launches were required to build the International Space Station, which sits in low-Earth orbit  far closer than the moon. Two of the shuttles - Challenger and Columbia - were destroyed, one at launch, the other during the ride home. NASA's first space shuttle flight was in April 1981, the last was in July 2011.
The space shuttle is not as durable as the launch vehicles.
( z0 have-degree :ARG1 ( z1 shuttle :mod ( z2 space ) ) :ARG2 ( z3 durable ) :ARG3 ( z4 equal :polarity - ) :ARG4 ( z5 vehicle :purpose ( z6 launch ) ) )
(z0 / have-degree-91
    :ARG1 (z1 / shuttle
              :mod (z2 / space))
    :ARG2 (z3 / durable)
    :ARG3 (z4 / equal
              :polarity -)
    :ARG4 (z5 / vehicle
              :purpose (z6 / launch-01)))
The space shuttle is not as durable as the launch vehicles .
z1 :mod z2
z0 :ARG1 z1
z0 :ARG3 z4
z4 :polarity 0
z0 :ARG2 z3
z5 :purpose z6
z0 :ARG4 z5