Okay, first of all, after reading all these reviews I could't help myself but to write something as well.
So...some people say it's good for kids and unintelligent and uneducated people. I must say...throw that comments in to garbage! Why? Because even if I'm not to physics I can certainly see that this is not too much filled with scientific terms and ways of explanation. That is a fact and that is on spot, but...let me say one more thing. This series are made for wide range of people, not for astronomers and physicists to learn something new or to improve their research. It's meant to show us random people some interesting facts, about astronomy and universe overall and potentially get some of us in to the world of science.
I, for example am a 3D & visual effects specialist and I could easily say, that the visual effects here are mediocre and not something special at all, because that is my profession and I see it. But okay, that goes for me and other VE experts, but random people who are not in to computer graphics will say..."wooow what a stunning graphics and visuals, mind blowing animation and effects, i'm totally blown away." while I'll sit there mumbling "damn, they could've done this a lot better". That's okay, that does not mean they're blind for esthetics and dumb not to make a difference between good and mediocre when they see it. It's just that CG is not their field of interests and they're not learning and researching that field such as us CG (computer graphics) artists do, so they can't tell about processes of creating CG, how it's done, how it could've been done, what could be made better, etc.
Same goes for other people who are saying that this is dumb. Dear people, not all of us here are scientists. If you are a physicists and find it dumb...not all of us will think the same. If you want to discover something new, go do a research, make a discovery for yourself instead of making one-sided comments.
Assuming you've never done CG before. Would you understand me if I start explaining it to you now and immediately start with: mental ray renderer, rendering algorithms, global illumination, final-gathering setup, FG points cashing, reactor scripting, mesh exporting, material map ID setting, channel setting, texture scaling, keying, camera tracking, 3D tracking, setting up key velocity, curve editing, animation controllers, etc, etc, etc, etc.....and you've never even heard for any of the CG making softwares. I doubt it, no matter how intelligent you might be.
So for the conclusion and for recommendations...Do watch this show if you're into something new, if you want to find out interesting and fun stuff about cosmos and astronomy and ignore those who are saying that this is for lowbrainers. You're not dumb if you like to watch this. I'm 26 years old, a member of MENSA with an IQ of 148, and I find this show fun and interesting a lot ;-)
So cheers and enjoy :-)