Hoberman Space Discover Dome Discovery Dome Personal Planetarium - Blast-off on a Deep Space Adventure! Discover Dome Magically Unfolds from 9" to 24"! Explore the Solar System and Beyond! Closed the dome is a map of the different destinations on your journey to the solar system and beyond. Open the dome and enter a universe of beautiful images and fascinating facts about the sun, the planets and other cosmic wonders.