Animals
In space and astronautical engineering, animals have been used for scientific research to understand the effects of microgravity and space radiation on living organisms. Animals such as mice, rats, monkeys, and even fish have been sent to space to study the physiological and behavioral changes that occur in space. These studies have helped scientists understand the effects of space travel on humans and have led to the development of countermeasures to mitigate these effects. Additionally, animals have been used to test the safety and efficacy of space equipment and technology before they are used on humans. However, there are ethical concerns surrounding the use of animals in space research, and alternative methods such as computer simulations and in vitro studies are being developed.
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