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Motion of the S11 - Sun's declination Just stay tuned...

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Motion of the Sun our motion about the Sun makes it look like the Sun is in front of different stars over the course of the year, why is the apparent path of the Sun, the ecliptic, tilted relative to the Celestial Equator? Again, our bad - we're the ones that are tilted. If you hold your head to the side and walk around all day like that, and if you don't know you have your head tilted, you might think that the entire world is at an angle. Since the Earth is tilted, there are times when the tilt has the Sun located north of the Celestial Equator and other times when the Sun is located south of the Celestial Equator. If the Earth were not tilted then the Sun would be always located on the Celestial Equator - which would be pretty boring. The angle of the tilt, 23.5º, is an important number (remember seeing it in values for the
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Unformatted text preview: Sun's declination?). Just stay tuned, you'll see it again. The Earth is tilted over; is that such a big deal? You're darn right it is, because without this tilt, there would be no seasons. As the Earth goes around the Sun, the tilt of the Earth causes different parts of the Earth to receive different amounts of sunlight. During the months of May, June and July, the northern hemisphere of the Earth is tilted more toward the Earth than the southern hemisphere. That gives the northern hemisphere a greater amount of heat and results in higher temperatures and more sunburns. The opposite is true during November, December and January, when the Northern hemisphere is tilted away from the Sun. Check out Figure 4 to see the situation....
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