Interesting concept, albeit one that has been used many times before., which starts the review at 5.0 - 0.5 points for being a retread.
The problem is that unlike other similar "get-to-space" games, the number of chances to get the game completed is rather limited, which is rather frustrating in itself. On top of that, medals do not always work in this game for me, for example the "Astronaut" medal does not work, despite getting the "Flight to the Moon" and "Hello, Martians" medals. Those problems drop my rating of the game by 2.0 points.
Finally, the background music is rather generic and does not seem to match the game either, which is a 0.5 point drop for my review.
Starting grade (5.0 points) - being a retread (0.5 points) - Gameplay and medal issues (2.0 points) - Generic music (0.5 points) = 2.0 points