Very nice little puzzle game.
It sometime felt hard to switch between planets to scale them, I don't know if the collider for the click is too small, but it sometime didn't work.
Also, if the spaceship goes outside the screen, it just slide along side it :P feels like it should restart the level.
But I like the music, the calm little place you build in space and the dramatic explosions when you fail, it's a visually polished little experience :)