Req 6b — International Space Station
The International Space Station is both a spacecraft and a place to live. Its purpose is to support long-term human life in orbit while giving scientists a laboratory where they can study microgravity, Earth, technology, and the human body.
Purpose
The ISS helps crews perform research that is hard or impossible to do on Earth. It also teaches engineers how to support people in space for months at a time, which matters for future missions to the Moon and Mars.
Operation
The ISS circles Earth about once every 90 minutes. Crews arrive on spacecraft, dock, live aboard, perform experiments, exercise to stay healthy, maintain equipment, and eventually rotate home while a new crew takes over.
Because it is a station instead of a short-mission vehicle, its operation depends on constant teamwork: ground controllers, cargo deliveries, visiting spacecraft, maintenance schedules, and international coordination.
Components to describe
Major ISS systems
These components help it work as a long-term orbiting outpost
- Modules: Pressurized rooms where crews live, work, and do science.
- Solar arrays: Large panels that collect sunlight for power.
- Trusses and radiators: Structures that support equipment and release extra heat.
- Docking ports: Places where visiting spacecraft connect.
- Life-support systems: Air, water recycling, and temperature control.
- Robotic systems: Arms and tools used for moving equipment and helping with station work.