I love Science-Fiction, I read almost all Philip K.Dick's Books, I really like Asimov's Sci-Fi, Silverberg, and even the Books of Jules Verne.
And I like too Science-Fiction anime like Ghost In The Shell (and every Mamoru Oshii's Movie), and even the Adventure type SCi-Fi by Leiji Matsumoto (Star Blazers, Capitan Harlock).
Well, this anime directed by Goro Taniguchi who already did a great space opera with Planetes, has a unique idea that contains a lot of references to titles like Capitan Harlock or science fiction recent movies like Neill Blomkamp Humandroid. The Adventure, the Robots theme, here not controlled by A.I., and this is the best idea and the most important theme of the entire plot. But there is also something else. There is something beyond.
I loved the animation, the graphic style, even the "kawai" type characters, that make this anime right even for kids! Try it and Enjoy this great show!