Analog

Analog refers to a type of technology that uses continuous signals to represent information, as opposed to digital technology which uses discrete signals. In the context of space and astronautical engineering, analog technology is often used to simulate space environments and test equipment and procedures in conditions that are similar to those experienced in space. Analog simulations can be used to test spacecraft systems, train astronauts, and develop new technologies. Analog simulations can also be used to study the effects of long-duration spaceflight on the human body and to develop countermeasures to mitigate these effects. Analog technology has been used extensively in space exploration, including in the development of the Apollo program and the International Space Station.
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