It's a lab for life-saving science, an orbiting observatory for Earth's evolving climate, and a testbed for humanity's exploration of the Moon, Mars and beyond. It's a meeting ground in space for countries and explorers from around the world—and now, it's our home through 2030. Learn more about our latest extension of operations for the International Space Station: https://go.nasa.gov/3njU9qG | NASA - National Aeronautics and Space Administration

Happy Birthday International Space Station! It's been exactly 20 years since the first part of the ISS was sent into space. | BBC World Service