File:Sun-Moon apparent sizes (sequence).gif
Original file (1,134 × 1,080 pixels, file size: 9 MB, MIME type: image/gif, looped, 19 frames, 29 s)
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Summary
[edit]DescriptionSun-Moon apparent sizes (sequence).gif |
English: Apparent sizes of the Sun and Moon depicted to scale. The Sun is about 400 times the diameter of the Moon. But it is also ~400 times farther away, so their apparent sizes when viewed from Earth are roughly the same. Both appear as roughly half a degree in diameter. With the Earth and Moon being in elliptical orbits, the apparent size varies slightly. The Sun's apparent diameter changes from 31' 36" – 32' 42" (0.5267° - 0.5450°), while the Moon has a little more variation changing from 29' 26" - 33' 30" (0.4905° - 0.5583°). Because there are times when the Moon appears larger than the Sun and other times when the Moon appears smaller than the Sun, this enables two distinctly different types of eclipses to occur: total and annular. During a total eclipse, the Moon will fully block the Sun. During an annular eclipse, a full ring of the Sun is still visible when the Moon is centered directly over the Sun.
This gif image cycles through 19 separate frames. Here is the description for each frame: |
Date | |
Source | File:The Sun by the Atmospheric Imaging Assembly of NASA's Solar Dynamics Observatory - 20100819.jpg, File:FullMoon2010.jpg |
Author | Tdadamemd |
Other versions | File:Sun&Moon apparent sizes (min-max halved).jpg, File:Sun-Moon apparent sizes (min-max quartered).jpg |
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current | 03:11, 22 July 2014 | 1,134 × 1,080 (9 MB) | Tdadamemd (talk | contribs) | User created page with UploadWizard |
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