The International Space Station is an unprecedented achievement in global human endeavors to build and utilize a research platform in space. Since 2000, the station evolved from an outpost into a highly capable microgravity laboratory. Results are compounding, new benefits are emerging, and the third decade is building on research.
See Also
How much do NASA, ESA and SpaceX pay astronauts?International Space Station Facts and Figures - NASALesson 2: What is weightlessness? What does it feel like?Why is it necessary to travel 11km per second to escape the earth's gravity (escape velocity), when surely any speed will do, as long as you keep going up? | Notes and Queries