Planetary texture maps (with the exception of Earth) and Earth's cloud map from Celestia, used under the GPL, version 2. Earth's surface is a monthly Blue Marble Next Generation image from NASA, and thus public domain.
Physical information is based on the Wikipedia articles about the respective bodies. The color of OGLE-TR-122b is based on an artist's rendition at [1]
My own contributions to this image (which are mainly the stars) are available under the GPL, v. 2, and other licenses. See User:Paul Stansifer/Size comparison for more details and the other licenses.
This work is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; version 2. This work is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See version 2 of the GNU General Public License for more details. GNU General Public License v2GPLv2https://www.gnu.org/licenses/old-licenses/gpl-2.0.htmltrue
See also
Zoomed out view of 1e10m length scale: Rigel, Aldebaran, and smallerZoomed in to show only the smaller objects: Saturn Jupiter OGLE-TR-122b and smallerZoomed in view, transparency versionVersion with transparency set and different textures and lighting.
