I'd like to echo what SyllabusGames said. The game is pretty chill with that music and all, which, according to your description, is the mood you were going for. But I feel that the last level undermines it a little bit by demanding extremely precise input (mostly since going too high and touching the ceiling resets you back to the start). So after a couple dozen retries the intended mood was no longer there and the one-word description of this level in my head firmly changed from "challenging" to "frustrating". Eventually I ran out of patience and cheated my way to the ending. All in all, I think it took away from the experience somewhat.
On the technical side of things, occasionally my mouse drag didn't register when I clicked on the platforms, though it generally wasn't a problem and didn't prevent me from almost beating the game.
I loved the mechanics overall and the feel of using the momentum of moving platforms to launch the chick in space to reach its target. The idea is really nice and the game looks and feels very good, so well done to you. (Also nice pun in the title.)