http://visibleearth.nasa.gov/
http://eol.jsc.nasa.gov/
http://www.stsci.edu/resources/
http://www.weatherscapes.com/index.php
http://antwrp.gsfc.nasa.gov/apod/archivepix.html
http://www.spitzer.caltech.edu/
http://pixdaus.com/
http://moqojiy.tumblr.com/
http://englishrussia.com/
And ofcourse Google Earth and Flickr are good resources for images
/ Max






- By Mark Bell