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Mark Sykes
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Mark Sykes

American astronomer

Learn about this topic in these articles:

study of comets

  • Comet McNaught
    In comet: Tails

    In 1986 American astronomer Mark Sykes and colleagues discovered faint trails of material in images of the sky taken by the Infrared Astronomical Satellite. Sykes showed that those trails matched the orbits of several well-known periodic comets, including Encke’s Comet and 10P/Tempel 2. Further analysis showed that the trails…

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