Use the arrow keys to navigate - use space to visit a planet or exit a planet. (Please note that the placement and names of planets are procedural, and are not planets that have simply been put there by me - everything but the terrain is generated procedurally!) Also, there's no objective or goal of the game - it's just an experiment about visiting other planets and seeing pretty sights :D
An experiment with press space to show the idea of an 'urban' planet