April 9, 2012
Those strange rock structures are towers and walls of sedimentary rock that are particularly plentiful in Bryce Canyon in Utah, USA. Image credit Ben Cooper
April 17, 2011
The sun seems to rise from behind the hills near the Tholos, a circular building in the sanctuary of Athena Pronaia in ancient Delphi, in an analemma photo composite made in Greece in 2001. Photographer Anthony Ayiomamitis
February 11, 2011
This composite image of Arp 147, a pair of interacting galaxies located about 430 million light years from Earth, shows X-rays from the NASA’s Chandra X-ray Observatory (pink) and optical data from the Hubble Space Telescope (red, green, blue) produced by the Space Telescope Science Institute (STScI) in Baltimore, Md.