TL:DR; Complete 2011 Nautical Almanac in pdf format.
Complete 2011 Nautical Almanac in pdf format. Includes star charts with the planet\'s positions for each month.
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.
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.
Combine multiple sights on different tracks. Data available for 9999BC to 9999AD including a Star Atlas, twilights and eclipses. It will print conventional Nautical Almanac pages while the voyage plan is a sophisticated tool in its own right.
