choice. This image is a derivative work of the following images: File:Radius-Dichte-terrestrische-Planeten.png licensed with Cc-by-sa-2.0-de, Cc-by-sa-3...
DescriptionRadius-Dichte-terrestrische-Planeten.png English: Diagram of radius and density of terrestrical planets. Deutsch: Radius und Dichte terrestrischer...
Pythagoras large font.svg , Autor = Benutzer KaiMartin auf Commons, Lizenz = CC-by-sa 3.0 1 Quelle = Pell right triangles.svg , Autor = David Eppstein...
