The concept and simplicity behind this game is really what makes it something special---the only problem I had with it (which has been mentioned in other comments) is the controllability of the planet. I was able to find a few "tricks" to work around this mechanic, but it was overall a bit frustrating. Again, though, the concept and the design of each level is very creative and was an overall fun play!

I quite enjoyed this game, I am fascinated with gravity as a mechanic and I think this game does it justice. My only issues was with the speed of moving the planets, it was too sensitive to my arrows. I am not sure if every frame the arrow is down it keeps adding speed so maybe its that? or faster frame rates somehow creating faster planet movement. When I got to the third level with the red dots it becomes extremelydifficult to navigate. 

I really liked having an aha! moment when i realized if i didnt want to overshoot the ship i should just steer it from afar instead of my initial instinct of bringing it real close to speed it up, then having trouble adjusting its trajectory.

I love the concept here a lot, the idea of using gravity physics to guide something fits very well. With that said, I think the controls are doing a disservice to the game; the planet feels very floaty and needs to come to a stop more easily in order to not spin out of control. Multiple times I lost track of it after it moved off-screen.