$20 to $50

Google "orrery" because you'll be building one, winding it up, then watching planets orbit the sun at their own speed! Explore gear mechanics as yo...

Turn any room into a planetarium for astronomers in training! Give them sweet dreams of travel through space: this projector displays either a rota...

Introduce your little star to the wonders of our solar system! This dazzling memory and matching game has thick cardboard tiles that are easy for l...