Sea Surface Temperature 
Sea-Surface Temperature 
Synchronous Service Transport 
Single Subscriber Terminal 
supersonic transport 
Spitzer Space Telescope 
Satellite Servicing Technology 
Spacecraft Systems Test 
Spectroscopic Survey Telescope 
Spread Spectrum Technology 
Systems Services and Technology 
scalable spectral tool 
Sea Surface Temperatures 
Secondary surge tank 
Shuttle Support Team 
Simultaneous Self-Test 
Solid-State Technology 
space support team 
Spacecraft Systems Tests 
Standard Star Tracker 
Student Support Team 
Safe secure transport 
Satellite to Satellite Tracking 
SERUM SEPARATOR TUBE 
Shear Stress Transport 
Single Sideband Transmission 
Single System Trainer 
Single System Trainers 
single-shell tank 
Site Scientist Team