It's a good concept for the jam, and the art fits very well!
Just a few comments: for me, 8 minutes seems too long. Maybe, considering the short development time, it would be better to have less time, using a poetic license of the distance between the earth and the sun haha.
Also, very often the player just stops when walking. I didn't understand if it is intended or if it's a bug. If it's intended, I missed a game response for this.