Granted the graphics are a bit sub-par. But I can't think of another reason why it deserves less than an easy 10/10. Why aren't there any other reasons, you may be wondering...
...Oh yeah, it's Patrick 'friggen' Stewart.
Men want to be him and women want to f**k him.
My guess is that Mr. Stewart's agent asked for a huge sum of money (as I'm sure most if not all celebrities have little to no control about salary negotiations between production company/investor/talent). Thereby leaving the Director and art crew with a severely limited budget relying on visuals to convey a brief look at the target object in space. All shots that involved animation weren't made the focal point in the first place (people, spaceships, spacefrogs lol). It's about where we are going and what's out there not how we are gonna get there.
I also couldn't help but focus on his enthusiasm and knowledge. Sure, some was script, but 40+ minutes is a lot to memorize. He obviously knew what he was talking about. Segmented or not, his monologue's were lengthy
My conclusion:... I found it as Edutaining as Rachelhawk did... well, maybe not as much as her in her 20's. hehehaha But she is correct about everything. Not overwhelmingly intimidating to the point of college level astrophysics, but still educational. It might not be as visually appealing to an adult, but a child would totally find it interesting (I know I would as a 10 yr. old). One day that child is gonna connect this documentary with Star Trek and then his imagination will really take. Can we say "Future Astronaut" folks. Just as many former Astronauts have credited in the past.
"PHEW" finally done with my rant. =)