This is a retouched picture, which means that it has been digitally altered from its original version. Modifications: vectorialized. The original can be viewed here: Planetsizes.jpg: . Modifications made by Henrykus.
The NASA website hosts a large number of images from the Soviet/Russian space agency, and other non-American space agencies. These are not necessarily in the public domain.
The SOHO (ESA & NASA) joint project implies that all materials created by its probe are copyrighted and require permission for commercial non-educational use. [2]
2010-01-10T14:40:15Z Qurq 300x223 (15491 Bytes) ((Information |Description=((en|1=Comparison of sizes of planets of different composition)) |Source=http://www.nasa.gov/centers/goddard/news/topstory/2007/earthsized_planets.html |Author=Marc Kuchner/NASA GSFC |Date=2007-24-0