How are craters on the moon important and what are some of the most prominent ones?
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Craters on the moon are important because they demonstrate that meteors do sometimes come close to the earth and are of large enough size to do considerable damage. The moon might actually fend off or catch a lot of the meteors before they strike the earth. \n\nThere are millions of craters on the moon. Here are some big ones. You can easily find many more:\n\nAristarchus 25 miles (40 km) in diameter and 2.2 miles (3.6 km) deep (from rim to floor)\nPtolemaeus (diameter=164 km ) \nAlphonsus (diameter = 108 km) \nAlbategnius crater (diameter = 114 km)
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Undoubtedly our moon has been impacted by asteroids and other objects that otherwise would have struck Earth. If the moon wasn't there, then it follows that we might be struck more frequently.
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It has to do with refraction due to different densities of air-in cooler climates, there tends to be much warmer air near the surface, with colder air in higher altitudes, plus the colder air is much more dense, so acts like a magnifying lense- The very largest moon-views are always seen close to the horizon because of this.
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Distance to the Moon\n\n  \n  \n  \n  \n     \n An Astronomy Tid-Bit about the mean and extreme distances to the Moon\n\n  \n  \n  \n  \n     \n   Note:  Distance is from center to center of orbiting bodies.\n             Kilometers divided by 1.6093 = miles.       \n\n      Many sources, such as beginning astronomy textbooks, yearbooks, and atlases, give the distance to the moon as 384,400 kilometers (km), and  0.055 as the flattening or eccentricity of the moon's elliptical orbit around the Earth.\n\n      The moon travels around Earth in an elliptical orbit, with the Earth at one of the two focuses (foci) of the ellipse.  As a result the distance to the moon varies by quite large amounts.  Its close (or perigee) distance is 384,400 x (1- 0.055) = 363,258 km.  Its far (or apogee) distance is 384,400 x (1+0.055) = 405,542 km.  BUT these values turn out to be the mean or average values.  See the table below for actual distances.\n\n      The actual (computed) distances over 10 centuries, from  1500 to 2500, have been calculated by the Belgian astronomer, Jean Meeus, to be as small as 356,371 km or as large as 406,720 km./1 These values differ from the MEAN values by 6,887 km and 1,178 km respectively\n\n      An excellent and easy-to-use source for the moon's position and distance is "Multiyear Interactive Computer Almanac" produced by the US Naval Observatory, Wash. DC and published by Willman-Bell, Inc., PO box 35025, Richmond, VA  232235.  The program called "MICA15" is on one CDRom for both IBM and MAC systems.  Included with the disk is an information and instruction book.\n\n      I used MICA15 to scan moon distances for the one  year, 2000, shown in TABLE 1.  The same source was used for the ten-year period, 1995 to 2005.  For this ten years,  the smallest distance (356,613.970 km) between Earth and Moon for this period occurred on November 4, 1998.  The largest occurred on March 14, 2002 when the moon was 406,706.975 km away.
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You might as well ask how to get to the moon?\nThere are twenty main titles before you can start choosing the detail?
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Ah, well, first of all, the moon hits hydrogen atoms in space, and thus slows down from its orbit aound the sun, and thus slowly moves off from its current orbit, and since the sun's Fg is larger than the Earth's, we can say bug off to Earth's Fg on the moon. \n\nOn the other hand, the slight changes in the moon's orbit around the sun does have some changes, like a slightly lower high tide. Still, it does not compare to 300 years of industrial revolution damage the humans has done.
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nothing... your car nowadays have a more complicated computer system then that lunar module.  I hope your asking about the first one that land on the moon
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I own a very fine acre of the light side of the moon. It's kinda left a bit from the middle. I could send you a map.
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because the moon doesn't have an atmosphere like the earth to burn up meteors. they collide into the moon with little resistance. on earth the friction of the meteor going through out atmosphere burns up most small meteors that would otherwise crash into the earth
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here is a picture\n\nhttp://www.godandscience.org/images/moonearth.jpg
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The Moon essentially has no atmosphere, as its gravity is too weak to hold onto an atmosphere, given the Moon's temperature.\nThe Moon lacks a magnetic field.  There are some isolated areas with hints of magnetism, probably from nickel-iron asteroids impacting.\nThe regolith is thick enough that no one had drilled through it,. but probably a few hundred miles.\nChemically the Moon is depleted in hydrogen, oxygen, nitrogen, and the elements from iron and higher.  It is enriched compared to Earth in calcium, silicon, magnesium, manganese, and others.  See wikipedia's essay on the Moon.\nPhysical state is solid.
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P1 & P2 are pre-existing moons, not the results of recent impacts.  There are a number of indicators as to this.\n\nThe first, to rule out a meteor impact in the past year, is that after the moons were noticed in 2005, photographs taken by Hubble from June 2002 - May 2003 showed the moons.\n\nAnother indicator that they have been there for a long time is their orbital stability.  They are in circular orbits in the same plane and direction as Charon, the previously known moon of Pluto.\n\nThere have also been no disturbances in Charon's orbit which would likely be the case if two new bodies were introduced into the Pluto system.  If they were recently introduced into Pluto's orbit, they would show a more erratic orbit, most likely not in the same plane as Charon and in a more eccentric orbit, moving closer and further from Pluto throughout their orbits.
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It's round because it has enough gravity to make it round, the force of gravity crushing away irregularities until a round shape is achieved. There's actually a limit in astronomy, anything with more mass then a certain amount will as a rule be round.\n\nAs for the holes, I assume you mean the craters. They are there because we're basically living in a shooting gallery of asteriods, comets, and meteors. On the moon there are no erosive forces so when one hits it the impact crater remains.
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Here is a quick page of info for ya. Hopes this helps.\n\nhttp://teacher.scholastic.com/researchtools/articlearchives/space/moon.htm
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Moon ring:\nhttp://home.hiwaay.net/~krcool/Astro/moon/moonring/\nhttp://www.ics.uci.edu/~eppstein/pix/josh3/MoonRing.html\nhttp://www.nasa.gov/worldbook/moon_worldbook.html
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http://www.space.com/reference/pluto/moons.html
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volcanic crater - a bowl-shaped opening at the top of a volcano, its that opening from which lava, gases, and ejecta ..\n\nfrom the wikipedia : Perhaps the most conspicuous part of a volcano is the crater, a basin of a roughly circular form within which occurs a vent (or vents) from which magma erupts as gases, lava, and ejecta. A crater can be of large dimensions, and sometimes of vast depth. Very large features of this sort are termed calderas. Some volcanoes consist of a crater alone, with scarcely any mountain at all; but in the majority of cases the crater is situated on top of a mountain (the volcano), which can tower to an enormous height. Volcanoes that terminate in a principal crater are usually of a conical form.\n\nOn Earth, volcanic explosion craters are often formed when magma rises through water-saturated rocks and causes a phreatic, or steam explosion. Volcanic explosion craters from phreatic eruption often occur on plains away from other obvious volcanoes. Other volcanic eruptions can cause mild explosions, often in a series of events. Some volcanic craters form by collapse with little or no explosive activity. Volcanic craters are typically seen either on the summits or on the flanks of volcanoes. Volcanic craters have also been identified on the Moon, Mars, Venus, and Io.