Phases of Mercury, computer artwork. Mercury exhibits phases in a similar way to the Moon as it orbits the Sun (centre).

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Size: 5669px × 3081px
Photo credit: © DAVID A. HARDY/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: ache, activity, condition, disorder, ear, earache, externa, female, females, feminine, healthcare, media, medical, medicine, otitis, pain, people, person, persons, woman, womanly, women