SkyORB is a 3D planetarium, star gazing and ephemeris, based from V3X.net engine. It features a modern 3D interface, search engine, a large catalogue of stars, planets, moons and updateable comets and asteroids database, and let you choose see the actual sky from any point on Earth or from any planet from the solar system.
System requirements: Windows XP, Pentium III 1Ghz or better / MacOSX 10.3.9 or better, PowerPC G4 or Intel processors. OpenGL 1.1 compliant video card or DirectX 9.0C. 64-bit version requires Windows XP Professional x64 Edition