I love the concept behind this game! Memories and the vastness of space and stars. The space travel aspect is super fun, right off the bat. For some reason, I expected inverse controls, but I have no idea why. I also really liked the music immediately too, I think it set the exploration, but poignant mood.
I do think that more background or instructions going in would be really helpful, or even just a quick explainer of some kind of story. The eye focus puzzles were confusing, but with instructions they could be a really cool challenge and I would like to see them as a finished puzzle in the game. They're intriguing and they make me want to know what's going on. (My first thought was focal seizures, as a sufferer myself, which would be so cool to see represented in a game!)
Overall, I enjoyed playing! I think the narrative is going in a fun direction, I just feel like there needs to be more of it so that I can understand even the littlest bit of what's going on. Right now the game mechanics are enough to intrigue me, and I feel like you've worked in the optional themes! I've followed so that I can see how this turns out so I can hopefully play as it develops!