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Eclipses. Solar Eclipses. The Sun is vanishing! The Sun is going out! The daylight is retreating!. Bad Omens All! The Gods are MAD!. A view from the past…. “Zeus, the father of the Olympic Gods, turned mid-day into night, hiding the light of the dazzling Sun; and sore fear came upon men.”
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Solar Eclipses The Sun is vanishing! The Sun is going out! The daylight is retreating! Bad Omens All! The Gods are MAD!
A view from the past… “Zeus, the father of theOlympic Gods, turnedmid-day into night, hiding the lightof the dazzling Sun;and sore fear came upon men.” Archilochus (c680-c640 BC)
Moon Earth The Modern View The answer lies hidden among the shadows.
Penumbra Penumbra Shadow Structure Umbra
North Pole Sun South Pole Solar Eclipse Details Moon What is the phase of the moon? New Moon!
Why not a solar eclipse every month then? Moon Earth 5o Ecliptic Moon’s Orbit Sun Moon's orbit is tilted about 5o with respect to the Earth's orbit (ecliptic), so the shadows usually miss!
·But, the Moon passes through the ecliptic twice a month. ·*IF* at new moon -SOLAR ECLIPSE probability.
Earth Sun Moon’s Path A Lunar Eclipse A lunar eclipse occurs when the Earth lies between the Sun and Moon, so that Earth's shadow darkens the Moon. Moon
This image shows a complete transition during a lunar eclipse. Notice that the phase of the moon is “full.”
The moon becomes a blood red color during a total lunar eclipse. No wonder that ancient cultures feared the appearance of the moon during a lunar eclipse.