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Moon Essay Paper

The moon is the only natural satellite of Earth. The moon orbits the Earth from384,400 km and has an average speed of 3700 km per hour. It has a diameter of3476 km, which is about that of the Earth and has a mass of 7. 35e22 kg.

Themoon is the second brightest object in the sky after the sun. The gravitationalforces between the Earth and the moon cause some interesting effects; tides arethe most obvious. The moon has no atmosphere, but there is evidence by theUnited States Department of Defense Clementine spacecraft shows that there maybewater ice in some deep craters near the moon’s North and South Pole that arepermanently shaded. Most of the moon’s surface is covered with regolith, whichis a mixture of fine dust and rocky debris produced by meteor impact. There aretwo types of terrain on the moon. One is the heavily cratered and very oldhighlands.

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The other is the relatively smooth and younger craters that wereflooded with molten lava. Throughout the 19th and 20th centuries, visualexploration through powerful telescopes has yielded a fairly comprehensivepicture of the visible side of the moon. The hitherto unseen far side of themoon was first revealed to the world in October 1959 through photographs made bythe Soviet Lunik III spacecraft. These photographs showed that the far side ofthe moon is similar to the near side except that large lunar maria are absent. Craters are now known to cover the entire moon, ranging in size from huge,ringed maria to those of microscopic size. The entire moon has about 3 trillioncraters larger than about 1 m in diameter.

The moon shows different phases as itmoves along its orbit around the earth. Half the moon is always in sunlight,just as half the earth has day while the other half has night. The phases of themoon depend on how much of the sunlit half can be seen at any one time. In thenew moon, the face is completely in shadow. About a week later, the moon is infirst quarter, resembling a half-circle; another week later, the full moon showsits fully lighted surface; a week afterward, in its last quarter, the moonappears as a half-circle again. The entire cycle is repeated each lunar month,which is approximately 29.

5 days. The moon is full when it is farther away fromthe sun than the earth; it is new when it is closer. When it is more thanhalf-illuminated, it is said to be in gibbous phase. The moon is waning when itprogresses from full to new, and waxing as it proceeds again to full.

Temperatures on its surface are extreme, ranging from a maximum of 127 C (261F) at lunar noon to a minimum of -173 C (-279 F) just before lunar dawn. TheHarvest moon is full moon at harvest time in the North Temperate Zone, or moreexactly, the full moon occurring just before the autumnal equinox on aboutSeptember 23. During this season the moon rises at a point opposite to the sun,or close to the exact eastern point of the horizon. Moreover, the moon risesonly a few minutes later each night, affording on several successive evenings anattractive moonrise close to sunset time and strong moonlight almost all nightif the sky is not clouded.

The continuance of the moonlight after sunset isuseful to farmers in northern latitudes, who are then harvesting their crops. The full moon following the harvest moon, which exhibits the same phenomena in alesser degree, is called the hunter’s moon. A similar phenomenon to the harvestmoon is observed in southern latitudes at the spring equinox on about March 21.

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Moon Essay Paper
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The moon is the only natural satellite of Earth. The moon orbits the Earth from384,400 km and has an average speed of 3700 km per hour. It has a diameter of3476 km, which is about that of the Earth and has a mass of 7. 35e22 kg. Themoon is the second brightest object in the sky after the sun. The gravitationalforces between the Earth and the moon cause some interesting effects; tides arethe most obvious. The moon has no atmosphere, but there is evidence by theUnited States Departme
2021-08-25 10:46:01
Moon Essay Paper
$ 13.900 2018-12-31
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