This is a scientific documentary that explores the previously disregarded problem of junk in space.
I did wonder what happens to all the fuel tanks and other detachable parts of the rocket after a satellite is put into orbit. "Space Junk" shows that they become limbo in orbit, waiting to collide with other pieces of man made celestial bodies. It's quite a shock to find out how environmentally unfriendly the space program is, and I was also shocked by the number of satellites in space.
"Space Junk" can ride on the wave of the recent and widely acclaimed film "Gravity", increasing awareness of the serious and dangerous problem of space junk. I hope there will be a solution soon, so that astronauts will have a safer working environment.