@worldofastronomers: After spending 197 days in space, returning to isn’t as simple as stepping back on the ground 🚶‍♂️ Life in microgravity causes muscles to weaken and bones to lose up to 1–2% of density per month, making even basic movements feel unfamiliar again 🧠 Astronauts often go through intense rehabilitation, retraining their balance, coordination, and strength after long missions. Without gravity constantly pulling on the body, the human system adapts to space—and reversing that takes time and effort 🛰️ It’s a powerful reminder that while space exploration pushes human limits, even something as natural as walking is something our bodies deeply depend on gravity for 🌍 #Space #Astronomy #Astronaut #Universe #Science