There are a small handful of story missions, and several new versions of older missions to play through. (ign.com)
I keep t - shirts from old mission trips and a t - shirt from a swim meet I had that my dad bought me, and never wear them anymore. (maggiealamode.com)
Well, probably not, but it is a beautiful milestone on any day for the 21 year old mission that shares its data with scientists over the internet. (treehugger.com)