Step up

1995-05-10T00:00:00

The US Air Force has exercised its third option under its small-launch-vehicle contract with Orbital Sciences, for a Pegasus launch of the STEP 4, space test programme satellite, in 1997. Other options exercised, were for the STEP 3 and fast on-orbit recording of transient events satellites, in 1995 and 1996.

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