Celestia
Celestia is a free real-time space simulation that lets you visually experience our universe in three dimensions.
Celestia doesn't confine you to the surface of the Earth as do many other programs. Instead, created a dynamic
capability to travel throughout the Solar System and elsewhere in space, at any speed, at any moment of time and in any
direction you choose. If you wish, you can fly via your own “hyperdrive” spacecraft to visit stars within the spiral
arms of the Milky Way beyond the confines of our Sun, or leave the galaxy entirely to view the bigger universe from deep
space.
Also this program would be scientifically accurate a true source of dynamic astronomical graphics.
