The Moon

The Moon

The MoonExcept for occasional comets and meteors, the Moon is the celestial body nearest the Earth. Its...
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SKU: gb-69102-ebook
Product Type: Books
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Author: Farrington, Oliver C. (Oliver Cummings),1864-1933
Format: eBook
Language: English
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The Moon

The Moon

$19.99 $9.99

The Moon

$19.99 $9.99
Author: Farrington, Oliver C. (Oliver Cummings),1864-1933
Format: eBook
Language: English

The Moon

Except for occasional comets and meteors, the Moon is the celestial body nearest the Earth. Its mean distance from the Earth is 237,640 miles, but as it moves in an elliptical orbit, it has at one point a remoteness of 253,263 miles and opposite to this one of 221,436 miles. The diameter of the Moon is about one-fourth that of the Earth, or 2,160 miles, and its volume is 1/49 that of the Earth. The mass of the Moon (volume multiplied by density) is 1/81 and the density that of the Earth. The period of the Moon's revolution about the Earth is 27 days, 7 hours, 43 minutes and 11 seconds. As its period of rotation on its axis is the same, only one side of the Moon is ever seen from the Earth. Since, however, the Moon's axis is inclined about 83 to the plane of its orbit, we sometimes see a little distance beyond each of its poles, and, since the rate of motion of the Moon in its orbit varies slightly, we sometimes see a little beyond the eastern and western edges of the hemisphere. The total result of these librations, as they are called, is to make four-sevenths of the Moon's surface visible to us. Of the remaining three-sevenths, nothing is known. So far as is known, the Moon is not flattened at the poles. ......Buy Now (To Read More)

Product details

Ebook Number: 69102
Author: Farrington, Oliver C. (Oliver Cummings)
Release Date: Oct 7, 2022
Format: eBook
Language: English
Publisher: Chicago: Field Museum of Natural History
Publication Date: 1925
Publisher Country: United StatesChicago

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