Make an amazing, bouncy meteor ball that will keep kids entertained for hours with the National Geographic Glow-in-the-Dark Meteor science kit! Start by mixing the special polymer powders in the included meteor ball mold. After that simply submerge the meteor mold in water and in minutes the glow-in-the-dark meteor ball will be ready to go. While kids wait for the mixture to set, they can check out the included learning guide which has fascinating facts about meteors and polymer science. This kit is a fantastic way to show kids how fun science can be