This theme has three categories of articles describing the planet:

• category:Astronomy: the Universe in which Atys evolves
• category:Materials, the "Atysology": internal structure, raw materials...
• category:Geography^*, the "Atysgraphy": cartography of Atys, described below and category associated with this portal.

Note:
*.— This category and portal were originally under the main portal "Atys". This may explain some categorization a little out of the "norm".