Quite the entertaining little fantasy story. I wonder how much NASA pays its writers to come out with top-notch drama like this.
If I may critique, I would put some kind of life-threatening obstacle in the astronauts' way, just to punch it up a bit. But the way they're releasing the story slowly over time gives it just the right level of suspense; I may get that life-threatening situation yet, and the tension will be even stronger, since I wasn't expecting it. I do suppose that NASA can't make their stories too exciting too much of the time, or they risk breaking the audience's suspension of disbelief (even as easy an audience as this proves to be, by definition, that is still a valid concern for them). But a little bit of heroics is never a bad thing, and I question if the promise of a spacewalk will be enough to satisfy my thirst for adventure. 2.5 stars out of 5, but if they are able to wake me up a bit in the second act I may increase that grade.