Just why do we have a space station, anyway? That's a question of relevance, because it turns out we might not have one after 2015. The International Space Science Station (ISS) is a football-field sized structure able to support six people 220 miles above us. It is a symbol of international cooperation, a marvel of technology, a new site for tourism and, to some, a project to be terminated in 2015.
What we've gotten from it? Some intangibles, some useful stuff.
- advancing our space capability
- increasing our limits on how long people can live in orbit
- keeping nuclear scientists from going rogue after the breakup of the Soviet Union
- research that benefits Earth