The Distant Suns-Grand Tour 3D screen saver is a high-speed full motion solar-system simulator using OpenGL technology and accelerated graphics.The positions and rotations of each of the planets and their moons are accurate to the current date. The Distant Suns-Grand Tour 3D screen saver is a high-speed full motion solar-system simulator using OpenGL technology and accelerated graphics. The positions and rotations of each of the planets and their moons are accurate to the current date and time! (As a result, this can also serve as a real-time clock.) As the day progresses you can observe the Great Red Spot of Jupiter as it wheels across the face of the giant planet. Watch the moons of Saturn in their daily dance around the majestic ringed world or the Earth rotate under your feet. The constantly changing scenes assure and infinite variety of interplanetary vistas. Rated 4 stars by PC Mag (June 8, 2004)