It took a bit of time to get used to, but it wasn't bad for a walking sim. Honestly, I just kind of wish there was more to this. Maybe having moments where you need to travel back and forth between planets would have helped, or throwing in some kind of puzzle on trying to slingshot yourself in order to get the distance needed. Maybe even a dialogue box or two if you have confidence in your writing.
Not sure if it was just a me issue, but I got flooded with a bunch of errors when first downloading this and while playing there was no sound (which I assume there was supposed to be given the credits).