Optical photograph of stars in the constellation of Bootes. The bright star at centre is Arcturus, or Alpha Bootes. A red giant, it is the fourth brig

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Optical photograph of stars in the constellation of Bootes. The bright star at centre is Arcturus, or Alpha Bootes. A red giant, it is the fourth brightest star in the sky, & is located 36 light- years away. 35mm, , Fuji 100 pushed 1 stop, 10 min. exposure, 13 April 1975, Ortega site.

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Size: 5125px × 3412px
Photo credit: © JOHN SANFORD/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: alpha, arcturus, astronomy, bootes, constellation, cosmology, field, giant, red, science, star, starfield, stars, stellar