The International Space Station

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This is the most expensive object ever built. It cost about $160 billion dollars and that price goes up as new sections are added. It floats 248 miles above the Earth and houses a crew of six astronauts. They live and work there while traveling at a speed of five miles per second. The station orbits the planet approximately every 93 minutes. It is 357 feet end-to-end and is the largest artificial satellite that has ever orbited the planet. Interesting, huh?