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Space technology is a term that is often treated as a category. Outer space (as commonly used, the universe exclusive of Earth, see also Extraterrestrial) is such an alien environment that attempting to work with it leads inevitably to new leading edge techniques and knowledge. New technologies originating with or accelerated by space-related endeavors are often subsequently exploited in other economic activities. This has been widely pointed to as beneficial spin-off by space advocates and enthusiasts favoring the investment of public funds in space activities and programs. Political opponents counter that it would be far cheaper to develop specific technologies directly if they are beneficial and scoff at this justification for public expenditures on space-related research.

For example: Computers and telemetry were once leading edge technologies that might have been considered "space technology" because of their criticality to boosters and spacecraft. They existed prior to the Space Race of the Cold War but their development was vastly accelerated to meet the needs of the two major superpowers' space programs. While still used today in spacecraft and missiles, the more prosaic applications such as remote monitoring (via telemetry) of patients, water plants, highway conditions, etc. and the widespread use of computers far surpasses their space applications in quantity and variety of application.

• Asteroid mining
• Ablative heat shield
• Aerobot (Planetary probe suspended in atmosphere.)
• Atmospheric braking
• Booster See also ICBM
• Centrifuge
• Gantry
• Human staffed missions
• Isolation chamber
• Lander
• Launch pad
• Reentry
• Real time
• Rocket
• Rocket sled
• Rover
  • Lunar Rover
  • Mars Rover
• Satellite
  • Communication satellite
  • Navigation satellite
  • Space observatory
  • Solar power satellite
  • Weather satellite
• Spacecraft
• Spacecraft propulsion
• Space elevator
• Space manufacturing
• Space probe
  • Aerobot (Planetary probe suspended in atmosphere.)
• Space shuttle
• Space station
• Space suit
• Space capsule
• Splashdown
• Telemetry
• Thruster

• Race2Space.org - Advancing the Privatization of Space Travel 2006, Race2Space, in partnership with the X Prize foundation, is seeking sponsorship in order to support the privatization of space travel, research, and exploration for the upcoming Lunar Landing Challenge Contestants October 2006."
• Centennial Challenges NASA prize contests
• Exploration of Mars
• Human Space Flight
• Space exploration
• Space colonization
• Timeline of artificial satellites and space probes