From the beginning of Time human beings, from the most primitive to the most culturally sophisticated, have followed and recorded the natural rhythms and cycles of the Earth. The intricate dance between the Earth and the other heavenly bodies has been the source of wonder and amazement giving rise to innumerable stories and myths all over the world. Many of these stores are still passed on today.
Ancient people of the Earth were concerned with these natural rhythms and cycles because their lives and livelihood depended on them. In certain times of the year food was plentiful in certain regions and not in others. At certain times the rains would come, at others they could expect the heat and drought. They also observed that fertility was somehow linked with the cycles of the Moon.
According to these various cycles of Nature then, people began to recognize a Cosmos of increasing complexity - repeating patterns and cycles enfolded within even larger cycles of order. The cyclic movements of the Sun, Moon, Planets and Stars indicated a Natural Order to Reality that provided our ancestors with meaning and the reassurance of continuity.
Heaven and Nature touched every aspect of their lives. Not only did their astronomical observations indicate when to plant their crops and when to harvest, but also where to locate their temples, how to design their homes and even how to orientate their cities. These people occupied a living and intelligent Universe that governed their lives. Survival and success then, depended on how well one could read the celestial signs.
As a brief review of the some of the most basic of these natural cycles, we will begin with the rotation of the Earth on its axis. Because the Earth rotates one complete revolution every 24 hours we observe the reoccurring periods of day and night.
Unfortunately there are surprisingly large numbers of people today that still do not understand that this daily cycle is caused by the motion of the Earth and not by anything the Sun is doing. This could somewhat be explained by the fact that our linguistic customs lag centuries behind our scientific understanding, and we continue to speak in terms of sunrise and sunsets.
Be that as it may, the next cycle we will look at is based not on the motion of the Earth but of the Moon. The Moon revolves around the Earth every 29.5 days, giving us the concept of the month as it appears in its different phases from New Moon to Full and once again back to New.
Then there is the observable cycle of the year, as the Earth dances around the Sun in an elliptical orbit taking 365.25 days to complete one revolution.
As people continued to observe the heavenly bodies they also began to notice that some of the bright lights in the sky moved while others stayed relatively stationary. These wandering bodies we have come to know as the planets, and various people all over the world took a special interest in their particular movement and cycles, spawning a huge number of stories, myths and legends.
To those early astronomers who kept records of the movement of the Sun, Moon and Planets one of the greatest mysteries that they observed was the fact that every year they would wait for the Sun to appear on the Spring Equinox or Winter Solstice at a specific place on the horizon signaling the New Year.
Over time they were dismayed to find that the Sun no longer appeared in the same place it did just 70 years before, but had moved one full degree (the equivalent to the diameter of the Sun - times two). This slow movement, called the Precession of the Equinox, causes the Equinox Sun to appear to slip backward against the backdrop of the stars.
Astronomers have now managed to figure out that the Earth is not a perfect sphere by any means. It’s actually a bit flattened at the poles and has a bulge at the equator. As a result, the gravitational pull of the Moon and the Sun exert an uneven influence on the Earth. Their gravitational forces try to pull the equatorial bulge toward them. Because the Earth is spinning these forces make the axis of the Earth wobble, shifting ever so slowly. Gradually the polar axis that was at one time aligned with a particular star begins to shift until it is aligned with another star.
Right now the Earth’s axis at the North Pole points to the star Polaris – which appropriately we call the Pole Star. But 5,000 years ago the north celestial pole aligned to the star called Alpha Draconis. Eight thousand years in the future the pole star will be Vega.
2007-06-28 10:57:58
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answer #2
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answered by Love. 5
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Nope, and that's a totally honest answer....
2007-06-28 08:03:16
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answer #3
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answered by Pirate AM™ 7
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