Astronauts experience significant physiological changes in microgravity, including a 1.5% monthly bone density loss, spinal decompression causing a 2-inch height increase, fluid shifts leading to facial swelling and 'moon face,' and DNA expression changes after extended missions like Scott Kelly's 340-day stay on the ISS.
Deep Dive
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Deep Dive
What astronauts never say about spaceAdded:
What if astronauts never told you the worst parts? Space smells. Nobody warns you. [music] Crack the airlock. Sulfur.
Burnt metal. Ozone. Scott Kelly described it. Welding [music] torch meets seared steak. You can't burp. Gas and liquid won't separate in zero g.
[music] Churning. Your spine separates.
Two full inches taller. Every vertebrae decompressing. Fluid shifts upward. Face swells. Moon face. A permanent six-month cold. Tears [music] don't fall. They pull. Quivering spheres stuck to your eyeballs. Your [music] skeleton thinks it's obsolete. 1.5% bone density gone per month. Scott Kelly. [music] 340 days. DNA expression changed. Body achd for months. Radiation 1 millisecever per day. 365 [music] times what you get on Earth. 5 mm of aluminum. Micrometeorites hit it. Gravel on glass while you [music] sleep. Space isn't what they sold you. It never built you for
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