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Topic: List of craters on Mercury

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	Mercury (planet) - Wikipedia, the free encyclopedia
		Mercury ranges from −0.4 to 5.5 in apparent magnitude, and its greatest angular separation from the Sun (greatest elongation) is only 28.3°, meaning it is only seen in twilight.
		Physically, Mercury is similar in appearance to the Moon as it is heavily cratered.
		Apart from craters with diameters in the range of hundreds of meters to hundreds of kilometers, there are others of gigantic proportions such as Caloris, the largest structure on the surface of Mercury with a diameter of 1,300 km.
	en.wikipedia.org /wiki/Mercury_(planet) (2705 words)

	Mercury (planet) (Site not responding. Last check: 2007-10-08)
		Mercury ranges from –0.4 to 5.5 apparent magnitude ; Mercury is sufficiently "close" to the that telescopes rarely examine it.
		Mercury was called Mercury when in evening sky but was known as Apollo —in honor of the Roman god of Sun when it appeared in the morning.
		This is Mercury has zero axial tilt and esentially atmosphere to carry heat from its sunlit and it would thus always be dark the bottom of even a shallow crater at the planet's pole.
	www.freeglossary.com /Mercury/Planet (1595 words)

	Mercury
		Mercury does not spin as fast as Earth, though, so a Mercurian day (the time it takes a planet to rotate once) is 59 Earth days.
		Mercury can be seen without a telescope, but it is normally visible for a few days only three or four times a year.
		Mercury is made up mostly of iron, with a thin rocky layer on the planet surface.
	www.lessonplanspage.com /more/205mer.html (465 words)

	List of Lists
		List of Ceremonial counties of England by Population
		List of Chancellors of the University of Cambridge
		List of Chancellors of the University of Mississippi
	www.starrepublic.org /encyclopedia/wikipedia/l/li/listoflists.html (2023 words)

	Wikinfo \| Crater
		Craters are typically caused by meteorite impacts, although some are caused by volcanic activity (see volcano for more on these).
		In the center of craters on Earth a crater lake often accumulates, and in craters formed by meteorites a central island (caused by rebounding crustal rock after the impact) is usually a prominent feature in the lake.
		Few underwater craters have been discovered because of the difficulty of surveying the sea floor; the rapid rate of change of the ocean bottom; and the "subduction" of the ocean floor into the Earth's interior by processes of continental drift.
	www.wikinfo.org /wiki.php?title=Crater (1208 words)

	Articles - Impact crater (Site not responding. Last check: 2007-10-08)
		An impact crater (impact basin or sometimes crater) is a circular depression on a surface, usually referring to a planet, moon, asteroid, or other celestial body, caused by a collision of a smaller body (meteor) with the surface.
		Few underwater craters have been discovered because of the difficulty of surveying the sea floor; the rapid rate of change of the ocean bottom; and the subduction of the ocean floor into the Earth's interior by processes of plate tectonics.
		Craters can also be created from underground nuclear explosions.
	www.zdiamond.net /articles/Impact_crater (1970 words)

	The Solar System: Mercury
		Mercury is the innermost planet in our solar system, and it is not the easiest of planets to observe from earth as it is small (diameter = 4878 km / 3030 miles).
		Mercury was named by the Romans after the fleet-footed messenger of the gods because it seemed to move more quickly than any other planet.
		Mercury is one of the five planets known to the ancients.
	www.cdli.ca /CITE/ss_mercury.htm (435 words)

	Mercury (planet) - Simple English Wikipedia
		Mercury is the nearest planet in the Solar System to the Sun.
		Mercury has only been visited by one spacecraft, Mariner 10.
		The planet is named after the mythological Roman winged messenger of the gods, because it orbits the Sun so fast.
	simple.wikipedia.org /wiki/Mercury_(planet) (187 words)

	Crater (Site not responding. Last check: 2007-10-08)
		Craters are caused by meteorite impacts although some are caused by activity (see volcano for more on these).
		In the of craters on Earth a crater lake often accumulates and in craters formed meteorites a central island (caused by rebounding crustal rock after impact) is usually a prominent feature in lake.
		Few underwater craters have been discovered of the difficulty of surveying the sea the rapid rate of change of the bottom; and the subduction of the ocean floor into the interior by processes of continental drift.
	www.freeglossary.com /Crater (1498 words)

	[No title] (Site not responding. Last check: 2007-10-08)
		In the center of craters on Earth a crater lake often accumulates, and in craters formed bymeteorites a central island (caused by rebounding crustal rock after the impact) isusually a prominent feature in the lake.
		Few underwater craters have been discovered because of the difficultyof surveying the sea floor; the rapid rate of change of the ocean bottom; and the subduction of the ocean floor into the Earth's interior by processes of plate tectonics.
		The Barringer crater in Arizona is a perfect example of a simplecrater, a straightforward bowl in the ground.
	immune-system-help.com /craters/list/crater.html (1015 words)

	Mercury (planet) - Psychology Central (Site not responding. Last check: 2007-10-08)
		Surface temperatures on Mercury range from about 90-700 K, with the subsolar point being the hottest and the bottoms of craters near the poles being the coldest.
		It was formerly thought that Mercury was tidally locked with the Sun, rotating once for each orbit and keeping the same face directed towards the Sun at all times, in the same way that the same side of the Moon always faces the Earth.
		However, because of the smallness of Mercury's orbit, all of the planets except the Earth and Venus have a larger spread between perihelion and aphelion (Mars' is 42.6 Gm to Mercury's 23.8 Gm, for example).
	psychcentral.com /psypsych/Mercury_(planet) (2727 words)

	Terrestrial Impact Craters
		Impact craters are geologic structures formed when a large meteoroid, asteroid or comet smashes into a planet or a satellite.
		In larger craters, however, gravity causes the initially steep crater walls to collapse downward and inward, forming a complex structure with a central peak or peak ring and a shallower depth compared to diameter (1:10 to 1:20).
		Chemical, isotopic, and age studies demonstrate that the crater is the most probable source for the Ivory Coast tektites, which are found on land in the Ivory Coast region of central Africa and as microtektites in nearby ocean sediments.
	www.solarviews.com /eng/tercrate.htm (2496 words)

	Wikinfo \| Mercury (planet) (Site not responding. Last check: 2007-10-08)
		Upon the celestial sphere, Mercury ranges from -0.4 to 5.5, in apparent magnitude; Mercury is sufficiently "close" to the Sun that telescopes rarely examine it.
		This is because approximately four days prior to perihelion, Mercury's orbital velocity exactly equals its rotational velocity; such that the Sun's apparent motion ceases; and, at perihelion, Mercury's orbital velocity exceeds the rotational velocity; thus, the Sun appears to retrograde.
		Alternately, Mercury may have formed very early in the history of the solar nebula, before the Sun's energy output had stabilized.
	www.wikinfo.org /wiki.php?title=Mercury_(planet) (1415 words)

	Mercury Ice
		In 1974 and 1975 roughly 45% of Mercury was mapped by the Mariner 10 spacecraft at an average resolution of 1 kg/pixel, with less than 1% mapped at resolutions between 100 and 500 meters.
		Upon final arrival at Mercury on, respectively, (1) 8-9 July 2002, or (2) 21-22 June 2004, the Isp=315 bipropellant engine fires at 450 Newtons to place the spacecraft into an elliptical 12-hour Mercury polar orbit with 200 km altitude periapsis at the equator and 17,560 km apoapsis (7.2 Mercury radii).
		Mercury's axis is a fraction of a degree from perpendicular to its orbit, so there are no Earth-like seasons, no sunrise or sunset at the poles, only the slow rotation and the swinging closer to and further from the furnace sun.
	www.magicdragon.com /ComputerFutures/SpacePublications/Mercury_Ice.html (4235 words)

	Astronomical objects named after people - Wikipedia, the free encyclopedia
		In addition to craters there are also various other topological features such as mountains, valleys, ridges on the Moon and other bodies which are also named after people.
		For other lists of eponyms (names derived from people) see eponym.
		For a list of eponyms sorted by names see List of eponyms.
	www.wikipedia.org /wiki/Astronomical_objects_named_after_people (237 words)

	Mercury (Site not responding. Last check: 2007-10-08)
		Mercury takes 59 days to rotate on its axis therefore the days and nights are very long.
		The craters were caused by the impacts of comets and asteroids more than 3.8 billion years ago.
		In Roman mythology, Mercury is the god of commerce and thievery, the Roman counterpart of the Greek god Hermes, the messenger of the Gods.
	www.escambia.k12.fl.us /schscnts/scee/oldsite/Curr/mercury/mercury.htm (581 words)

	ScienceDaily: List of craters on mercury
		Look for List of craters on mercury in Wiktionary, our sister dictionary project.
		Look for List of craters on mercury in the Commons, our repository for free images, music, sound, and video.
		Check for List of craters on mercury in the deletion log, or visit its deletion vote page if it exists.
	www.sciencedaily.com /encyclopedia/list_of_craters_on_mercury (917 words)

	Research Project -- Topographic Mapping of Mercury
		The aim here is to produce Digital Elevation Models (DEMs) of approximately one quarter of the surface of Mercury using Mariner 10 images from 1974 and 1975.
		It is believed that lobate scarps have formed due to the contraction of the crust from global cooling.
		We also hope to detect impact basins and shallow craters that were missed in the initial analysis of Mariner 10 images because topographic relief does not reveal itself in many of the images that were taken under high-noon sun angles.
	www.nasm.si.edu /ceps/research/mercury/topomerc.cfm (105 words)

	The atmosphere (from Mercury) -- Encyclopædia Britannica
		As the innermost planet in the solar system, Mercury is difficult to observe from the Earth because it rises and sets within two hours of the sun.
		Mercury is also the name given to the planet that orbits closest to the sun (see Planets).
		Mercury and Venus are the first two planets from the Sun and are the most similar to Earth.
	www.britannica.com /eb/article-241980 (828 words)

	[meteorite-list] Martian Craters With Rays May Be Sources for Mars Meteorites Found on Earth (Site not responding. Last check: 2007-10-08)
		Ray craters are common on the Moon, but they are quite rare on Mars, where the atmosphere stops the flying jets of shattered rock that make rays after an impact.
		The ray craters range in diameter from 1 to 6 miles (1.5 to 6 km), and most lie on volcanic plains dating from the most recent period in martian geological history, the Amazonian.
		The craters from these moderately oblique impacts typically have asymmetric shapes and ray patterns, just as the researchers find.
	six.pairlist.net /pipermail/meteorite-list/2005-March/171477.html (601 words)

	USATODAY.com - NASA sending a 'messenger' for a closer look at Mercury (Site not responding. Last check: 2007-10-08)
		Mercury gets a long-awaited place in the sun this month with the launch of the MESSENGER probe to the bizarre, pint-size planet.
		MESSENGER stands for MErcury Surface, Space ENvironment, GEochemistry and Ranging, a long acronym reflecting the long list of the craft's chores.
		• Craters in Mercury's poles, which are shielded from the sun's rays, could contain ice.
	www.usatoday.com /news/science/2004-08-01-nasa-mercury_x.htm (629 words)

	Geological features of the Solar System - Wikipedia, the free encyclopedia
		This is a directory of lists of geological features on other planets, moons and asteroids.
		List of geological features on Jupiter's smaller moons
		List of geological features on Saturn's smaller moons
	en.wikipedia.org /wiki/Geological_features_of_the_Solar_System (101 words)

	My Photojournal Favorite's List
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		The way we associate you with your list is through a persistent cookie left on your computer.
	photojournal.jpl.nasa.gov /favorites/PIA02488?action=remove (118 words)

	Encyclopedia: Planitia
		It is used in the naming of geological features on other planets.
		Common characteristics of these plains are polygonal fractures, complex albedo patterns, and craters within raised platforms (pedestal craters0, all of which are found around the Utopia Site, but somewhat muted, as though there were a thin cover masking the more general characteristics of the plains.
		Several flat-topped bluffs to the east of the spacecraft may correspond to some of the tongues of debris from Mie crater.
	www.nationmaster.com /encyclopedia/Planitia (234 words)

	Mercury the Great! (Site not responding. Last check: 2007-10-08)
		Mercury is the planet closest to the sun, enduring intense heat all day.
		Mercury has been visited by only one spacecraft, which was called,Mariner 10.
		Mercury's surface is covered in crators from the many meteorites that have hit it.
	www.kn.pacbell.com /wired/fil/pages/listmercurych.html (1466 words)

	GuruNet — Content Map
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	www.gurunet.com /cm-dsid-2222-letter-1L-first-18451 (61 words)

	List of craters on Mercury - Wikipedia, the free encyclopedia
		This is a list of named craters on Mercury.
		All Mercurian craters are named after famous writers and artists.
		See also: List of geological features on Mercury
	en.wikipedia.org /wiki/List_of_craters_on_Mercury (117 words)

	Popular Mechanics - 'Messenger' Probe Launches To Mercury
		Mercury was visited by one other spacecraft in the mid-1970s.
		Another enigma is Mercury's magnetic field, the only one comparable to Earth's, at least among the so-called terrestrial planets.
		Temperatures at Mercury's equator reach 800°F, but they drop to minus 300° F in the shadows of the perpetually dark craters at the poles.
	www.popularmechanics.com /science/space/1283131.html (530 words)

	Lunar Republic : Craters
		Joseph-Nicolas ~ (1688-1768), French astronomer; proposed that the series of colored rings sometimes observed around the Sun is caused by diffraction of sunlight through water droplets in a cloud.
		He also worked to find the distance of the Sun from the Earth by observing transits of Venus and Mercury across the face of the Sun.
		In this catalog, which to this day remains the standard reference used by astronomers the world over, he listed 7840 objects.
	www.lunarrepublic.com /gazetteer/crater_d.shtml (3837 words)

	USGS Astro: Planetary Nomenclature - Mercury Nomenclature Crater (Site not responding. Last check: 2007-10-08)
		Visit the newly redesigned Gazetteer of Planetary Nomenclature to find the most up-to-date information.
		See CRATER in the descriptor terms page for additional information.
		Hun Kal 0.5S 20.0W 1.5 SA MY I1822 H-6 5 1976 80 AA Means "20" in Mayan language; 20th meridian passes through this crater.
	planetarynames.wr.usgs.gov /mercury/merccrat.html (4140 words)

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