The front hemisphere of the Hammer retroazimuthal projection overlaid onto the back hemisphere. 15° graticule; center point at 0°E, 45°N. Imagery is a derivative of NASA’s Blue Marble summer month composite with oceans lightened to enhance legibility and contrast. Image created with the Geocart map projection software.
<a href="//commons.wikimedia.org/wiki/User:Strebe" title="User:Strebe">Strebe</a>
<span class="int-own-work" lang="en">Own work</span>