Stuff in Space is a neat interactive visualization of all the objects orbiting the earth. There are tons of satellites, spacecraft parts, and debris out there, just circling the earth until someone does something about it. You can scroll to zoom in and out, and drag to rotate your view of earth and its surroundings. Mouseover to find the name of an object, and you might be able to look it up somewhere. The menu at the top left allows you to sort objects by type.
Notice the distinct red ring 35,800 km above the equator; those are geostationary satellites. You'd think that aliens should be able to find us by all our satellites, rockets, and garbage. -via Metafilter
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Sounds like a job for Salvage 1!
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