- The space station is in a Low Earth Orbit and can be seen from Earth with the naked eye; it orbits at an altitude of approximately 350 km (190 mi) above the surface of the Earth, and travels at an average speed of 27,700 kilometers (17,210 mi) per hour, completing 15.7 orbits per day.
- The International Space Station (ISS) is a research facility currently being assembled in outer space,on an -orbit construction of which began in 1998.
