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| the study of the universe |
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| can be seen rotating around the North Pole |
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| where the eliptic crosses the celestrial equator |
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| the set of 12 major constellations through which the eliptical passes |
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| two points on the ecliptic at its maximum displacement from the equator |
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| the path that the sun seems to follow around the sky annually |
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| the north/south coordinate on earth that measures north/south of the equator |
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| the east/west coordinate on earth measuring distance east/west of the "Prime Meridian" that runs through Greenwich, England |
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| the north south celestrial coordinates distance north/south of the celestrial equator; it is also measured in positive or negiative degrees |
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| the east west celestrial coordinate measuring east/west of the "Spring Equinox" |
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| The poles have declination but they do not have accension. |
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North Pole +90 degrees
South Pole -90 degrees |
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Winter Solitice
Declination:
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Definition
Dec.: -23 1/2 degree
R.A.: 18 hours |
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Summer Soltice
Dec.:
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Dec.: +23 1/2 degrees
R.A.: 6 hours |
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Spring Equinox
Dec.:
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Dec.: 0 degrees
R.A.: 0 hours |
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Dec.: 0 degrees
R.A.: 12 hours |
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| The Earth is..(distance from the sun) |
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| 1/4 million miles away from earth |
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| 23 1/2 degrees north of the equator; no sun shadow because the sun is above |
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| 23 1/2 degrees south of the equator ( winter) |
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| The Artic circle has what all day? |
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| The Antartic Circle has what all day? |
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| one 360 degree rotation of earth is measured against the stars; 23 hours and 56 minutes. |
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| one rotation of earth is measured relative to the configuration of the sun; its longer than a sideral period; 24 hours |
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1. New
2. cresent ( waxing)
3. first quater( waxing)
4. gibbous ( waxing)
5. full
6. gibbous( waning)
7. third quater(waning)
8. cresent( waning) |
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| Times that the moon phases will be present |
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Definition
1. full- noon
2. cresent-3 pm
3. first quater-6 pm
4. gibbous- 9pm
5. full-midnight
6. gibbous-3am
7.third quater-6am
8. cresent-9am |
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| this means that moon is stronger or more visible |
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| this means that moon is losing strength or its fading |
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| happens when the sun, moon, and earth align perfectly and light will blocked from earth's surface |
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| lighter outter portion of the shadow |
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| the planets that orbit outside of earth's orbit |
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| planets that orbit within earth's orbit |
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| 6 trillion miles; how fast light travels |
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| ursa minor( little dipper) |
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| earth centered solar system |
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| sun centered solar system |
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