This is a cool little platformer! The gimmick is nice and the controls felt good for a game of this genre. I do have a few suggestions, though:
1. Instead of the dialogue playing at a set speed, you could make it a "press A to progress" sort of thing. This may not have been a problem for everyone but I tend to be a fast reader, so the dialogue did interrupt the flow of the game a little.
2. There were a few issues with the camera - it would freeze in place at certain spots until I messed with an object as Glitch, after which the camera would follow Gatt again as normal. If this was fixed, the game would play much more smoothly.
Overall, though, I liked it! I do appreciate the twist you put on the theme here, with the "space" being the out-of-bounds space of the game world instead of space in the conventional sense.