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SAFER | simplified aid for EVA rescue |
SAMS | Space Acceleration Measurement System |
SAR | synthetic aperture radar |
SPK | Stredstvo Peredvizheniy Kosmonatov [cosmonaut maneuvering unit] |
SSAS | Solid Sorbent Air Sampler |
STS- | Space Transportation System [designation for U.S. Space shuttle missions] |
TDRS | Tracking and Data Relay Satellite |
TEPC | Tissue Equivalent Proportional Counter |
TI | terminal [phase] initiation |
TSuP | Tsentr Upravleniya Polyotami [Russian flight control center] |