Similar to 3D games VRPresents Software on Mars Exploration Rover Spirit Mission.
License: Demo
OS Support:

Watch Nasa TV including live space shuttle launches and space walks.
License: Demo
OS Support:

Complete talking astronomy software suite with encyclopedic reference.
License: Shareware
OS Support: Win95,Win98,WinME,WinNT 3.x,WinNT 4.x,Windows2000,WinXP,Windows2003,

View a dark energy inside Solar system on your dektop with this screensaver!.
License: Freeware
OS Support: Win95,Win98,WinME,WinXP,WinNT 4.x,Windows2000,Windows2003,

This utility can convert a gregorian date into julian day format and vice versa.
License: Freeware
OS Support: Win95,Win98,WinME,WinNT 3.x,WinNT 4.x,WinXP,Windows2000,Windows2003,

Visit stars & planets, see galaxies & nebulas, try this 3D software planetarium!.
License: Shareware
OS Support: Win98,WinME,Windows2000,WinXP,Windows2003,

The World Almanac displays solar and lunar data throughout the day.
License: Shareware
OS Support: Win95,Win98,WinME,WinNT 3.x,WinNT 4.x,Windows2000,WinXP,Windows2003,