Where do satellites go when they die?

On February 23rd, a Chinese satellites orbit degraded and it came to a flaming end over Montana.  Which raises the question, what happens to satellites after they are no longer viable?  Since there was an Aurora alert that night, several observers were out and documented the fireball.  We aren’t always as lucky to see satellites end in such a spectacular way.  So, where do old satellites go to die? Countries and commercial ventures have been putting spacecraft in orbit around Earth since the late 1950s. There must be a lot of space junk out there. So what happens to them when they no longer work? Find out more at:  http://spaceplace.nasa.gov/spacecraft-graveyard/en/