- Space tracking, telemetering and command center net Management Center
- space transformation
- space transformation of existing building
- space translation invariance
- space transportation
- space transportation system
- space transportation vehicle
- space transporter
- space transport vehicle isothermal design
- space tribology
- space truss structure
- space ultraviolet camera
- space ultraviolet ray
- space-valued
- space variable
- Space Variable Objects Monitor
- space variance
- space variant impulse response
- space-variant impulse response
- space vector pulse width modulation
- space vehicle
- space velocity
- space versus time trade-offs
- space very long baseline interferometry
- Space VLBI exploration