I've rated it on a value of 7.0
The reason why is like modern warfare: a new gimmick is introduced into the franchise that makes it look fresh but the core gameplay still remains intact and is the same thing. Nothing new has been really added other than the gimmick, a new bird, and a few tweaks. 30 levels are placed as in-app purchase and the gold egg levels may look special but aren't worth finding.

At this moment, Angry birds space is just angry birds. There hasn't been any real content added other than the gravity gimmick and we only have one new bird.. Which has become a main element in the game since levels are now mostly rock solid.

Until there are possibly new updates at the moment: I'm issuing this game a 7.0 because while the gravity gimmick is fun at times, the gimmick can be looked through and the content in this game is extremely poor.. It feels like as if they were only focused on the gravity gimmick more than what makes up for the angry birds franchise

Again, it's a hard buy for anyone except angry bird fans... it only depends if you're willing to sling a few birds one more time..