Gravity shapes human physiology, influencing bone density, muscle strength, and circulation. On Earth, bones and muscles maintain strength through constant resistance against gravitational force. In microgravity environments like space, astronauts experience muscle atrophy and bone loss due to reduced strain on their bodies. Fluid shifts upward, causing facial puffiness and vision changes. Extended time in low gravity affects balance and coordination upon returning to Earth. Scientists study ...

Gravity shapes human physiology, influencing bone density, muscle strength, and circulation. On Earth, bones and muscles maintain strength through constant resistance against gravitational force. In microgravity environments like space, astronauts experience muscle atrophy and bone loss due to reduced strain on their bodies. Fluid shifts upward, causing facial puffiness and vision changes. Extended time in low gravity affects balance and coordination upon returning to Earth. Scientists study ...