Images Dated 19th September 2007

Helix nebula, infrared Spitzer image

Helix nebula (NGC 7293), infrared Spitzer Space Telescope image. This is a planetary nebula, a series of shells of gas cast off by a dying star. The ejection of the star's outer layers exposes its hot core, whose radiation ionises the shells, causing them to glow. This image was taken at wavelengths of varying energy: high (blue), medium (green) and low (red). The gas in the central regions has been ionised more than the outer gas, which is shielded from the stellar core. The most highly ionised areas (cometary heads) are round the edge of the central void. Foreground and background stars are blue. The Helix nebula is 650 light years from Earth, in the constellation of Aquarius. Image data obtained by the IRAC sensor in October 2004

© NASA/JPL-CALTECH/J. HORA (HARVARD-SMITHSONIAN CfA)/SCIENCE PHOTO LIBRARY

Palace Of Fine Arts

The western end of the colonnade surrounding the Palace of Fine Arts, built for the 1915 Panama-Pacific International Exposition in San Francisco, circa 1920. The Palace and colonnade were reconstructed in the 1960s. (Photo by FPG/Hulton Archive/Getty Images)

© 2007 Getty Images

16175, Huty1617510, Reflection, Lake, Architectural, 78075455, Black, Fair, Architecture, Nobody, Huty, Feature, Pillar, Bw186086, White, Worlds

Adios

A Spanish bullfighter bids farewell to his anxious sweetheart before entering the arena, 1872. Adios, an engraving by W. Hollidge after a painting by John Haynes-Williams. Original Publication : Illustrated London News - pub. 20th January 1872. (Photo by Hulton Archive/Getty Images)

© 2007 Getty Images

119498, 16170, Separation, Anxiety, Fan, Sport, Bullfighter, Love, Holding, 3367, 5 4, 66316, H Typ Euro Spa , Format, 76857602, Box, Diry, Hands, Standing, Spanish, Couple, Women, Men, H, Orig, Portrait, J146464609, Print