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ISS

This is a CPU 2 Level 10 space station inspired by the real International Space Station. While the CPU 2 version is a little bare bones...it is easily upgradeable and full of room for activities. I recommend bumping this up to a fully fledged Level 20 CPU 3 or 4 space base if you plan on fighting anything off with it.

The International Space Station is a large modular spacecraft initially sent into orbit around Earth in 1998. It serves as a home where crews of astronauts and cosmonauts live. The space station is also a unique science laboratory. Several nations worked together to build and use the space station. The space station is made of parts that were assembled in space by astronauts. It orbits Earth at an average altitude of approximately 250 miles. It travels at 17,500 mph. This means it orbits Earth every 90 minutes. NASA is using the space station to learn more about living and working in space. These lessons will make it possible to send humans farther into space than ever before.