Mir : Terror in Space

You chose answer D.

Garbage

Yes. After the food, parts, and other supplies that arrive on Progress are unloaded (a process that takes two or three weeks), the unmanned craft is filled with the space-station's accumulated trash and deployed back toward Earth. The entire vessel, garbage and all, incinerates during re-entry into the Earth's atmosphere. A pretty neat system - when it works!

Want more information on Mir? Check out this week's NOVA website.

Let's see what kind of an "effect" next week's NOVA Challenge has on you!