Explore the fascinating cosmic phenomena of the universe, from our own solar system's planets to the farthest reaches of outer space. Every month brings another exciting project about planets, galaxies, constellations, space exploration, the Hubble Space Telescope, and the most recent cosmic discoveries. The four-color stickers mark special dates and keep track of astronomy activities like comet sightings, meteor showers, constellation gazing, and more. Glow-in-the-dark stickers illuminate the monthly projects and anything else you want to decorate.