JOHN SANFORD / SCIENCE PHOTO LIBRARY JOHN SANFORD / SCIENCE PHOTO LIBRARY
Starry sky seen between the constellations of Cygnus (bottom right) and Cepheus (centre and top left). The brightest star at bottom right is Deneb (alpha Cygni) and to the left of it the North America nebula (NGC 7000) is visible as a faint, red nebulosity. The North America nebula is found at a distance of about 3000 light years; it consists of a cloud of hydrogen ionised and lit up by a hot star found within it. At upper centre the larger but also fainter nebula IC 1396 is also seen.
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