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CELESTIAL MOTIONS

Earth. Starry Vault. CELESTIAL MOTIONS. Stars appear to move counterclockwise on the surface of a huge sphere – the Starry Vault, in their daily motions about Earth. Polaris remains stationary. In Charlottesville we see Polaris 38 0 above the Northern horizon. .

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CELESTIAL MOTIONS

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  1. Earth Starry Vault CELESTIAL MOTIONS Stars appear to move counterclockwise on the surface of a huge sphere – the Starry Vault, in their daily motions about Earth Polaris remains stationary. In Charlottesville we see Polaris 380 above the Northern horizon.

  2. Daily Motion of Stars seen from Charlottesville

  3. Ecliptic Sun IMPORTANT TERMS Vernal Equinox Summer Solstice Autumnal Equinox Winter Solstice Celestial Equator

  4. LATTITUDE 380 NORTH 380 Charlottesville Sunlight Equator Earth

  5. MOON Siderial Period: Time for the Moon to orbit Earth and realign with a star. Equal to 27.32 days. Synodic Period: Time for the Moon to orbit Earth and realign with the Sun. Equal to 29.53 days. Zodiac: A band extending 80 on either side of the ecliptic. The Sun, Moon, and planets move through the zodiac.

  6. MOON’S PATH THROUGH THE ZODIAC Ecliptic Moon Sun

  7. PHASES OF THE MOON Full Crescent Half Gibbous

  8. ECLIPSES Lunar eclipse Moon Earth Solar Eclipse Moon Earth

  9. LUNAR ECLIPSE

  10. SOLAR ECLIPSE

  11. MOTIONS OF THE PLANETS The five planets visible by naked eye are: Mercury Venus Mars Jupiter Saturn

  12. VENUS RETROGRADE MOTION

  13. VENUS AND MERCURY RETROGRADE MOTION

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