Wow! Totally unexpected. At first I didn't like that there where no movement feeling, also thought that the player was too slow. And then the monologue started.
Very well executed! Add a parallax and some particles to the astronaut's propulsor and the game should be ready to be a nice and polished experience.
By the way, the soundtrack and monologue are yours or you took them from some place. In case it is the second, can I please have an URL to them?
Thank you and keep going!