Hello,
The concept of this game is quite good but there are a few things you need to work on to make this game really interesting to play. First, the Astronaut is too big for the screen and the obstacle to dodge in such a compact environment. Secondly, you can add up air thrusters to make the Astronaut move in a direction to reach its goal instead of just floating around one point. Some sort of Game progression is required to make the player engaged while playing this game.