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The International Space Station orbits the Earth every 90 minutes at 7 km/sec.
Astronauts on the ISS have to work out for more than 2 hours to prevent muscle and bone loss.
The ISS was assembled piece by piece over the years. Today, It is about the size of a football field.
Eight spacecraft can be docked to the ISS at once.
Astronauts on ISS experience 16 sunsets and 16 sunrises in a 24 hour period.
ISS is currently the most costly object ever built by humans.
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