What Happens to Astronauts' Health After Long Space Missions?
What Happens to Astronauts' Health After Long Space Missions?
Record-Breaking Space Stays
Astronauts like Sunita Williams, Frank Rubio, and Russian cosmonauts have spent over 300 days in space. But how does it affect their bodies?
Muscle Wasting and Bone Density Decline
In zero gravity, muscles weaken, and bones lose up to 30% of their density, increasing fracture risks.
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Growing Taller in Space
Spines expand in zero gravity, making astronauts taller. But this can lead to back pain and slipped discs
Fluid Shifts and Vision Problems
Fluid shifts in space can cause swelling around the eyes and optic nerves, affecting vision
Radiation Risks in Space
Without Earth’s magnetic field, astronauts face high radiation levels, increasing cancer and DNA damage risks
Weakened Immunity and Heart Strain
Space weakens the immune system and can affect heart function, making recovery crucial
45 Days of Rehabilitation
After landing, astronauts undergo a 45-day recovery plan to readjust to Earth’s gravity
A timeline showing bone recovery over 4 years
Bone density recovery can take up to 4 years, and some effects may last a lifetime.
Preparing for Mars and Beyond
As we plan for longer missions, understanding space health is key to exploring the cosmos