Experiments Astronauts Conduct on the ISS and Beyond

Astronauts aboard the ISS and other spacecraft perform a wide array of scientific investigations across disciplines:

1. Life Sciences

• Microgravity effects on humans (bone loss, muscle atrophy, fluid shift)
• Space adaptation syndrome (motion sickness)
• Plant/animal growth and development in microgravity

2. Earth Observation & Remote Sensing

• Climate, weather, environmental monitoring
• Natural resource mapping (water, forests, minerals)
• Disaster tracking (hurricanes, fires, earthquakes)

3. Materials Science

• Protein crystallization for drug design
• Fluid physics in microgravity
• Crystal growth for semiconductors/pharmaceuticals

4. Astronomy & Astrophysics

• Telescope operations (e.g., Hubble servicing, future missions)
• Spacewalks for instrument maintenance/upgrades

5. Technology Demonstrations

• Life support, robotics, communications, habitat prototypes

6. Human Behavioral Research

• Psychology of isolation, confinement, stress
• Group dynamics in small crews over long durations

These experiments advance fundamental science and enable future deep-space exploration.