This is a file from the Wikimedia Commons. The description on its description page there is copied below.
English: A composed satellite photograph of Antarctica in orthographic projection.
Deutsch: Antarktis, Mosaik aus Satellitenfotos (orthografische Azimutalprojektion).
This is NASA "Blue Marble" image applied as a texture on a sphere using Art of Illusion program. The observer is centered at (90° S, 0° E), at Moon distance above the Earth.
Warnings:
Sellele pildile viitavad järgmised leheküljed: