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Fish in outer space

23.07.2023

China is preparing to send zebrafish to the Tiangong space station to study their interactions and effects on other organisms in a limited, closed ecosystem. The main focus of the study will be on the study of the possible loss of bone density in astronauts during prolonged stay in a microgravity environment.

The new study aims to study the loss of bone density that astronauts can experience during prolonged exposure to zero gravity. This issue could have a significant impact on future space missions.

This is not the first time fish have been sent into space. In 1973, a group of fundulus fish were sent into Earth orbit to the first Skylab science laboratory to study their response to weightless conditions.

The fish managed to successfully incubate dozens of eggs, from which newborn fish fundulus emerged, able to adapt to weightlessness.

Also, the Japanese space agency conducted a study of the effects of microgravity on a small group of medaka fish aboard the International Space Station.

The results of the study showed that the fish experienced a significant deterioration in well-being and, almost immediately after arriving at the ISS, began to lose bone density. Typically, such effects are observed in astronauts after about 20 days of stay in the space environment.

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