Published June 3, 2014 at 1300 × 731 in NASA Releases Earth Day ‘Global Selfie’ Mosaic A small snapshot from within the 3.2-billion-pixel sized NASA Earth Day Global Selfie 2014 photo mosaic. Image credit: NASA/JPL-Caltech/NOAA (Click image to enlarge) (Visited 38 times, 1 visits today)