This is a great experience which also teaches me a lesson over stars. The idea of using triangle particles as hydrogen gives the game a unique visual identity of sharp and simple. The sprite for the stars looks cute and cartoonish. The changing chunky texture for the star is beautiful. However, they combined very well. This is a very visually appealing experience.
I do hope the game gives players more response when the players click and drag. It can be visual or sound. Other than that, I think the game is perfect. Unique Idea for the prompt and very well executed.