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…showed last 75 words of 483 total…Today, animals are still used in micro-gravity investigations. One of the main focuses of animal investigations is to find out how various gravitational inputs adapt the complex mechanisms that may be involved with Earth-based diseases. Some people think that using animals in space is cruel, but they have clearly played a major role in space exploration. The continuing development of space travel and safety in space will be advancing in the future due to animals.