Mars by Diego Velázquez Published May 30, 2013 at 705 × 1400 in Mars by Diego Velázquez This is a file from the Wikimedia Commons. This image (or other media file) is in the public domain because its copyright has expired. Resource: http://ancienthistory.about.com/od/mgodsandgoddesses/g/062509RomanWarGodMars.htm