Science
Total lunar eclipse set to turn Moon red | Total lunar eclipse set to turn Moon red |
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| by William Atkins | |
| Thursday, 23 August 2007 | |
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Early Tuesday morning, August 28, 2007, a colorful lunar eclipse will be visible from Australia, parts of Asia, Japan, and most of the Americas. In the United States, the western part of the country will be favored with the best conditions.
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Science DiscussionsThe lunar eclipse begins at 12:54 PDT (Pacific Daylight Time) when the Moon begins to enter the Earth’s shadow. About two hours later, the color of the Moon will change from its normal grayish color to a reddish color. The red color comes about because light from the Sun as it reaches the Earth must pass through the dense atmosphere of Earth before reaching the Moon. The scattering of this sunlight produces the red coloring. Thus, at about 2:52 PDT the start of the total lunar eclipse begins. On the east coast, the begin of the total lunar eclipse is 5:52 am EDT August 28, in the central part of the country its 4:52 am CDT, in the mountain time region it is 3:52 am MDT, in Alaska its 1:52 am, and in Hawaii its 11:52 pm (August 27).
To find out when the eclipse will happen in your locality, go to Time Zone Converter. For instance, 12:54 am PDT August 28 (in Los Angeles, California, U.S.) would convert to 5:54 pm August 28 in Sydney, Australia. A lunar eclipse happens when the Earth passes between the Sun and the Moon. When it does so, the Earth casts a shadow on the Moon. The phenomenon called a lunar eclipse is different than a solar eclipse (which happens when the Moon passes between the Sun and the Earth) because, in the latter case, the Sun’s light is prevented from reaching the Earth. Lunar eclipses do not happen very often, about twice each year. They do not occur very often because the plane of the Earth’s orbit about the Sun is at an angle that is different from the planet of the Moon’s orbit about the Earth. Once every six months, these two planes intersect to produce a lunar eclipse. A lunar eclipse always happens when the Moon is a full Moon. An interesting description of the total lunar eclipse, as seen from the surface of the Moon, appears on the Science at NASA website. It is described below:
“To understand why the change occurs, close your eyes and dream yourself all the way to the Moon. Once again, you're standing on a seashore—the Sea of Tranquillity. There's no water. You're surrounded by hundreds of miles of dusty, hardened lava. Overhead hangs Earth, nightside down, completely hiding the Sun behind it. The eclipse is underway.” |
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