ECKHARD SLAWIK / SCIENCE PHOTO LIBRARY ECKHARD SLAWIK / SCIENCE PHOTO LIBRARY
Waxing gibbous Moon. Image 7 of 15. Optical image of a waxing (increasing in apparent size) gibbous Moon ten days into its 28-day cycle. The Moon is said to be gibbous when it is more than half full. The phases of the Moon are due to it revealing different amounts of its sunlit face as it orbits the Earth. Image taken on 14th May 2000. For a sequence showing the Moon throughout its cycle of phases, see images R340/596-610.
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