INTERNATIONAL SPACE STATION
Humanity's permanent home in orbit — science platform, proving ground, and symbol of global cooperation
"The International Space Station is a remarkable achievement. It's the most complex structure ever assembled in space, and it stands as proof of what humanity can accomplish when nations work together." — Chris Hadfield, Commander, Expedition 35
- Serve as a world-class orbiting laboratory enabling research in biology, medicine, materials science, Earth observation, and physics impossible to conduct on the ground.
- Demonstrate the technology and operational knowledge required to sustain human life beyond Earth orbit — paving the way for crewed missions to the Moon, Mars, and beyond.
- Foster international cooperation among five space agencies and twenty nations, proving that complex infrastructure can be built and operated across geopolitical boundaries.
- Develop and validate life support, propulsion, robotics, and habitability systems for long-duration spaceflight, informing next-generation deep-space vehicles.
- Inspire the next generation of scientists, engineers, and explorers through unprecedented public engagement and educational outreach from 408 km altitude.
Construction of the International Space Station began in November 1998 with the launch of the Russian Zarya module, a pressurized cargo block that provided early propulsion and power. Two weeks later, Space Shuttle Endeavour delivered the Unity connecting node. The first permanent crew — Expedition 1 — arrived on November 2, 2000, and humanity has been continuously present in orbit ever since.
Assembly proceeded over 13 years through more than 40 construction flights, adding European and Japanese laboratories, arrays of solar panels spanning 73 meters, and the iconic Cupola observation dome. The final pressurized module, the Russian Multipurpose Laboratory Module Nauka, docked in July 2021. The completed station hosts up to seven crew members and runs hundreds of science investigations simultaneously.