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| 1983 - 1994 |
Soldiers cost less than aircraft which cost less than ships. Satellites, rockets, and related infrastructure cost more than aircraft and require scientists, engineers, and technicians. Space programs are cheaper and easier to execute than nuclear programs, but the objectives of space programs can be executed with older or simpler technology.
The US has the most military and spy satellites. They are used almost exclusively for reconnaissance, navigation, and communication. Satellites have various advantages over older technology like spy planes, but they are not indispensable. Only a handful of countries even have such satellites, and the cost and difficulty of shooting them down is prohibitive for financial and strategic reasons.
Love is a battlefield, but space never will be. Sorry Star Wars fans.
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