Researchers are studying the effects of microgravity on human cells, with findings indicating that simulated microgravity can trigger changes in cell behavior and structure. Studies have explored the impact on various cell types, including keratinocytes, hepatic and biliary tree stem cells, and endothelial progenitor cells. The effects of microgravity on cell culture and behavior are being investigated through different models and approaches, including 3D cell culture and the use of hydrogels.