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Ref : S10665
Theme :
Testings - Satellites - Probes - Rockets (2314 images)
Title : Applied Physics Laboratory engineers and technicians from Johns Hopkins University
Caption :
(07/24/1997) --- Applied Physics Laboratory engineers and technicians from Johns Hopkins University test solar array deployment of the Advanced Composition Explorer (ACE) in KSC’s Spacecraft Assembly and Encapsulation Facility-II (SAEF-II). The wire hanging from the ceiling above the black solar array panel is used for 'g-negation,' which takes the weight off of the panel’s hinges to simulate zero gravity, mimicking deployment in space. Scheduled for launch on a Delta II rocket from Cape Canaveral Air Station on Aug. 25, ACE will study low-energy particles of solar origin and high-energy galactic particles for a better understanding of the formation and evolution of the solar system as well as the astrophysical processes involved. The collecting power of instrumentation aboard ACE is at least 100 times more sensitive than anything previously flown to collect similar data by NASA
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