NATS_1-27 - Nats104...

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Nats 104 Summer solstice: summer begins in the northern hemi Winter solstice: winter begins in the northern hemi mid winter is when the earth is closer to the sun equinox is when the 2 half’s of the world are getting equal amount of sun light o beginning of fall o beginning of spring Tropic of cancer o Highest place the sun will be directly above Tropic of Capricorn Arctic circle o Southern most latitude where you can see the sun in the winter Equator o days and night are always 12 hrs and the equinox is always on the equator Tropics [tropos] –Greek for to turn, sun appears to turn on the equinox Moon phases o In fact the earth moon and sun don’t share common orbital planes so the moon is rarely in the earth shadow Lunar eclipses rare! o Rather, side of the moon facing sun is always light o When a full moon rises, the sun is setting o A new moon is rising when the sun is rising Phase Rise Set New moon Sunrise Sunset 1 st quarter Noon Midnight Full Sunset Sunrise 3 rd quarter Nidnight noon Earthshine o The dark part of the moon is some times visible o Sunlight isn’t hitting, but sunlight reflected by the earth is
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This note was uploaded on 04/07/2009 for the course NATS 006 taught by Professor Eisner during the Spring '09 term at University of Arizona- Tucson.

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NATS_1-27 - Nats104...

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