Eclipses - Edinboro University of Pennsylvania

Eclipses - Edinboro University of Pennsylvania

Eclipses Lunar and Solar Eclipses Sun and Moon have almost the

same angular diameters Each subtend an angle ~ degree Sun is 400 times larger than the Moon and 400 times further away

Solar and Lunar Eclipses Everyone on Dark side of Earth sees a Lunar Eclipse, only a few will see a solar

eclipse shadow sizes! Slight change in lunar size due to its elliptical orbit around the Earth

Causes annular and total solar eclipses Total Solar Eclipse Moons shadow barely reaches the Earth

Lunar Eclipse Earth Shadow easily covers the Moon

Total Solar Eclipse Eclipse Path and Partial Eclipse Solar Eclipses

Corona, comets and diamond ring effect Annular Eclipse Moon near apogee (too far away)

Lunar Eclipse is often Reddish Due to refraction of Earths atmosphere

Red Color and Earths Shadow Red color near edges of shadow Eclipses occur ~ every 6 months

Line of nodes must point toward the Sun The alignment is not exact (eclipse limits)

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