DAVID SCHARF / SCIENCE PHOTO LIBRARY DAVID SCHARF / SCIENCE PHOTO LIBRARY
False-colour scanning electron micrograph of the surface of the Murcheson meteorite, showing mysterious fibres of unknown origin. The Murcheson meteorite is a carbonaceous chondrite, a rare type of stony meteorite which contains carbon. Some carbonaceous chondrites are believed to have come from the heads of comets. Magnification: x6,800 at 8x10, x 1,200 at 35mm size.
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