The space station is the only laboratory in the world that allows researchers to perform long-term experimentation in microgravity. It allows astronauts to run investigations that are not possible anywhere else, and the information we gather through this has many benefits back on Earth.
The space station has been continuously occupied by astronauts since November 2000. However, Zarya, the first module of the space station was launched in November 1998.
The space station is about the size of an American football field including the end zones. It weighs almost one million pounds.
The space station flies at an altitude of about 250 miles above Earth.
The space station travels at 17,500 MPH or about 5 miles per second. It orbits the Earth about once every 90 minutes. That means the sun will rise and set 16 times a day.
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