Image 1 - NASA, ESA, CFHT, CXO, M.J. Jee (University of California, Davis), and A. Mahdavi (San Francisco State University). Image found at hubblesite.org.
Image 2 - Image by Samuel Bourne, found in CAMIO, via The San Fransisco Museum of Modern Art's Gallery.
Image 3 - NASA Earth Observatory image by Jesse Allen, using Landsat data from the U.S. Geological Survey. Caption by Kathryn Hansen, with image interpretation from Erik Klemetti, Denison University. Found here at NASA's Visible Earth website.
Images to the Right