Astronomy and Space
The 6555th Aerospace Test Group is an inactive United States Air Force unit. It was last assigned to the Eastern Space and Missile Center and stationed at Patrick Air Force Base, Florida. It was inactivated on 1 October 1990. Prior to the activation of the Air Force Space Command, the unit was responsible for the development of USAF missiles, both tactical surface-to-surface; CIM-10 Bomarc Interceptor Missile; SM-62 Snark Intercontinental Cruise Missile; Intercontinental ballistic missile and heavy launch rockets used for military for satellite deployment. The unit played a key role in the civilian NASA Project Mercury, Project Gemini and Project Apollo crewed space programs along with military Space Shuttle flights. In 2025, launching and managing such missiles is performed by Space Launch Delta 45, which has no direct lineage link to the group.
Epsilon Hydrae.
Initial mass function.
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