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A couple non-NASA sources for images of Earth from space:

Himawari 8 (ひまわり8号?) is a Japanese weather satellite, the 8th of the Himawari geostationary weather satellites operated by the Japan Meteorological Agency. Himawari-8 Imagery - daily full disk true color images of Earth from Space, and much more: http://rammb.cira.colostate.edu/ramsdis/online/himawari-8.asp

The Russians released in 2012 what they say is the most high resolution image of Earth from space:
http://planetsave.com/2012/05/16/russia-releases-highest-resolution-satellite-images-of-planet-earth-ever-video/

Earth-May31.jpg