Gameplay: The gameplay is rather standard top-down shooter, with some interesting decisions. I like how you can't just spam the shoot button. Makes each shot a bit more deliberate. Shooting with arrow keys instead of mouse is not something that you see often, but it felt all right.
Graphics: I knew what was going on at all times, and the limited color palette worked. From the other hand, the enemy variety could be better. If you have a number of different behaviors why not make them more visually distinct?
Audio: sound was fine, and I liked the background music
Theme: Stargazing is mostly felt via graphics here. It's not bad, but I feel like you could lean more into the theme.