The Marshall Space Center in Huntsville managed the Inertial Upper State (IUS) to carry payloads to other bodies in the solar system.
On May 4, 1989, the Space Shuttle Atlantis crew deployed the Magellan spacecraft for its rendezvous with Venus using the IUS stage during the first day of the STS-30 mission.
On October 18, 1989, the STS-34 crew aboard Atlantis used the Marshall-managed IUS to boost the Galileo spacecraft toward a rendezvous with Jupiter.
On October 6, 1990, the STS-41 crew used an IUS to send the Ulysses probe on it's 5-year journey to explore the Polar Regions of the Sun.
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