SIMULATOR | PLANETES | UNIVERSE
WorldWide Telescope New! Preloaded in all PC Discovery Domes! WorldWide Telescope is a terrific fly-through of the solar system, the galaxy, and the universe, developed by Microsoft Research. E-Planetarium - WorldWide Telescope
Welcome to Celestia ... The free space simulation that lets you explore our universe in three dimensions.
The Solar Wind Tunnel
Image: The Vela supernova remnant, seen in visible light. “That intelligent creatures exist in outerspace is proven by the fact that they have not contacted us.” - Loesje Until Voyager reached the outer solar system we knew very little about the planets that inhabited this region of space. What we have discovered over years of exploration has both excited and mystified us. Come explore the science of the outer planets. Learn what we have already discovered, and discover what we have yet to learn. The Outer Planets