Celestia Crash Tutorial

Open source 3D astronomy program. Uses real photos on top of 3D models.
It has a huge database of stars (with distance, size and temperature data) and even galaxies!.
People of the world:dowload it

Zoom

Tilt camera

Change zoom

Orbits and Labels (B Stars  P Planets M Moons E Galaxies)

Grid ;

Constellations /

Enter, type,  go to

1-8 planets, H Sol

Time speed +K,- L Reverse J

Follow F, Sync orbit Y and the other one «

F10 screenshot

Increase/decrease luminosity [ ] { } ( )