Congrats on releasing it! Great result for a game made in a week.
I did give it a try even though I'm not great at jumping. With a controller (the game does support a controller ๐) I managed to get a bit farther, but still failed, hah.
A small trick I use to give spacey backgrounds more life is to plop a Particles2D node with tiny-twinkling-floating particles. Takes little effort but improves things a lot. Would be fitting for a space game.
I also think the game would work well as an HTML5 game. Itch supports those, and they're more convenient and accessible since they don't require players to download EXE files. People tend to be skittish about downloading things.