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CELESTIAL MOTIONS Stars appear to move counterclockwise on the surface of a huge sphere – the Starry Vault, in their daily motions about Earth Starry Vault.

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Presentation on theme: "CELESTIAL MOTIONS Stars appear to move counterclockwise on the surface of a huge sphere – the Starry Vault, in their daily motions about Earth Starry Vault."— Presentation transcript:

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

2 Daily Motion of Stars seen from Charlottesville

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

4 LATTITUDE 38 0 NORTH Sunlight Earth Equator Charlottesville 38 0

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 8 0 on either side of the ecliptic. The Sun, Moon, and planets move through the zodiac.

6 Ecliptic Moon Sun MOON’S PATH THROUGH THE ZODIAC

7 PHASES OF THE MOON CrescentHalfGibbous Full

8 ECLIPSES Lunar eclipse Solar Eclipse MoonEarth Moon

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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