Astronomy Hypertext_ Celestial Sphere

Astronomy Hypertext_ Celestial Sphere - 1/15/12 Astronomy...

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Unformatted text preview: 1/15/12 Astronomy Hypertext: Celestial Sphere 1/2 physics.gmu.edu/~jevans/astr103//earthSky_celestialSphere.html Astronom\ H\perte[t The Celestial Sphere Latest Modification: July 22, 2002 To ancienW peopleV, Whe Vk\ appeaUed Wo be Whe inVide of a immenVe dome coYeUing Whe EaUWh and e[Wending aV faU aV Whe\ coXld Vee. LiWWle ZondeU WhaW Whe\ conceiYed of Whe EaUWh aV a Vmall VpheUe (Vome VaZ Whe EaUWh aV being moUe like a flaW plaWe) aW Whe cenWeU of a hXge VpheUe, ZiWh Whe VWaUV locaWed jXVW inVide oU on Whe laUge VpheUe. ThiV WZo-VpheUe concepW iV VWill XVed b\ aVWUonomeUV foU oUgani]ing Whe Vk\. The imaginaU\ oXWeU VpheUe iV knoZn aV Whe celestial sphere . waWching Whe Vk\, eaUl\ peopleV coXld Vee WhaW VWaUV UiVe aboYe Whe eaVWeUn hori]on--Whe ciUcle WhaW diYideV Whe YiVible celeVWial hemiVpheUe fUom Whe inYiVible one--cUoVV Whe Vk\ dXUing Whe nighW, and laWeU VeW beloZ Whe ZeVWeUn hoUi]on. ThiV dail\ (oU diurnal ) behaYioU ZaV aWWUibXWed b\ moVW peopleV, inclXding Whe GUeekV, Wo Whe UoWaWion of Whe celeVWial VpheUe fUom eaVW Wo ZeVW. Toda\ ZepeopleV, inclXding Whe GUeekV, Wo Whe UoWaWion of Whe celeVWial VpheUe fUom eaVW Wo ZeVW....
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Astronomy Hypertext_ Celestial Sphere - 1/15/12 Astronomy...

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