From GameBrew - a wiki dedicated to Video Game Homebrew.
An educational homebrew on the complex subject of astronomy. It includes information about our solar system.
There is a mini recreation of the solar system.
The planets begin to rotate around the sun and we will get a relaxing tune. Touch a planet and its satellites are their names. The upper display shows the diameter, rotation period, obliquity etc. In the lower right corner of the top screen, it indicates the number of pages of information on the selected features.
This also applies in the sun, the asteroid belt, comets and the galaxy.
Stylus - Select Planet, Galaxy etc
R - Read the next information page
L - Read previous information page
ITouch DS (unknown firmware)
Acekard 2 (unknown firmware)
NDSTT (unofficial firmware 1.17a12)