First of all, Cosmos is a masterclass on low budget high production value.
It's awesome seeing what they talk about from a whole new view scape.
Yes it's not paced to the best of it's ability and some time could be cut out easily, but once things finally kick off, it's actually a great Flick with some heart pounding scenes.
They have obvious influences and wanted to set a tone based on those influences, and I think they nailed it.
Definitely worth a watch especially for any space lovers.