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It took about three days for astronauts to go to the Moon. The next target of people in space is Mars. It will take much longer to reach celestial bodies beyond Mars, for example, other planets in the Solar System or stars outside the Solar System.
Some scientists think that long space missions can minimize the physical and psychological negative effects of long space missions by awakening them when astronauts are put to sleep and reach their goals.
The European Space Agency (ESA) researchers are aiming to artificially hibernate living things that do not normally hibernate, using a substance called DADLE. In experiments with experimental mice, the heart rate, body temperature and brain activities of animals given DADLE can be monitored via sensors. In this process, it is aimed to reduce the metabolism rate of astronauts by 75%. Muscle weakness during hibernation is also an important problem. It is believed that drugs that strengthen the muscles can be used to solve this problem.
Getting astronauts into an artificial hibernation might seem like a crazy idea. However, a similar application is used in medicine. For example, patients with severe trauma are put into artificial coma and their metabolism rates are reduced. In cases where the brain is seriously damaged, patients can be put to sleep for months.