The 3257 Solar System Planetarium is a hands-on educational kit that allows children to build their own glow-in-the-dark solar system model. The kit includes all the materials needed to assemble the planets, sun, and moon, as well as a special varnish that makes them glow in the dark.

Once the model is assembled, children can learn about the solar system by placing the planets in their correct orbits and spinning them around the sun. The kit also includes a fact sheet about each planet, so children can learn about their size, composition, and other interesting facts.