Educational orbit and gravitation simulator for high school, college and beginning university physics and astronomy. Easily create, run, print and save a simulation. Includes 29 premade simulations with activities page in html-format.
Downloads: 68176 - Shareware - Download Now

Twelve months in the making and Solar Kingdom has now been released.
Downloads: 87539 - Demo - Download Now

Complete 2011 Nautical Almanac in pdf format. Includes monthly star charts with the planet's positions.
Downloads: 105165 - Freeware - Download Now

View a dark energy inside Solar system on your dektop with this screensaver! This screensaver shows all planets of our solar system, uncluding Saturn`s rings. It makes you able to know about dark matter and dark energy in our planet system.
Downloads: 67874 - Freeware - Download Now

Aciqra is a free and open source virtual planetarium and sky mapping program which tracks celestial bodies including planets, deep sky objects and stars.
Downloads: 102389 - Freeware - Download Now