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Contact: Francis Reddy
francis.j.reddy@nasa.gov
301-286-4453
NASA/Goddard Space Flight Center

Composite of C/2013 A1

Caption: This composite of C/2013 A1 (Siding Spring) merges Swift UVOT images taken between May 27 and 29, 2014. Sunlight reflected from the comet's dust, which produces most of the light in this image, appears yellow; violet shows ultraviolet light produced by hydroxyl (OH), a molecular fragment of water.

Credit: NASA/Swift/D. Bodewits (UMD), DSS

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Related news release: NASA's swift satellite tallies water production of Mars-bound comet


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