Learn how spacesuits scrub exhaled carbon dioxide, why removal matters in microgravity, and how modern life support systems keep astronauts safe.

Learn how astronauts put on spacesuits, from pre-breathing and checks to final seals, gloves, and life-support setup.

A launch suit is a pressure garment designed to protect astronauts during launch, ascent, and emergency cabin depressurization.

A spacesuit leak can rapidly become life-threatening. Learn what happens, how astronauts respond, and why modern suits are built with multiple safeguards.

Learn how microgravity changes bone density, why astronauts lose bone mass, and what space agencies do to protect skeletal health.

Learn how spacesuits regulate heat and cold in space using insulation, cooling loops, ventilation, and reflective materials.

Explore how microgravity affects vision, why astronauts develop spaceflight-associated eye changes, and what NASA is doing to protect eyesight in orbit.

Explore how astronauts recover after space, from muscle and bone loss to balance, sleep, and rehabilitation after landing.

Discover how astronauts manage medical emergencies aboard spacecraft and the International Space Station, from telemedicine to emergency procedures.

Learn how astronauts handle bathroom needs in spacesuits, including urine collection, absorbency systems, and NASA’s suit design constraints.