About: I am a chemical engineer from Germany especially interested in computational fluid dynamics. To balance all the theoretical work, I like to make stuff in my free time

In this instructable I am going to show you how to make a bath bomb that looks like the Death Star from Star Wars. Once placed in bathing water it will start to glow and make your bath a unique and fun experience.

I have always loved playing around with glow in the dark and UV light activated pigments and wanted to try this idea for quite some time. Since it will be Christmas soon and I figured that they would make a great gift I finally decided to give it a shot, not knowing how good they would turn out.

After a few iterations and a bit of experimenting I am finally happy with the result and ready to share it with you.You can of course make yours all black without the glowing effect, should you not want to modify a LED cube.