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	Moon Rocks
		Collecting moon rocks illustrates how the rocks were collected, the sampling procedure used and how they were stored for shipment back to Earth.
		Basalts were collected from two areas: the darker surface of the moon called "maria" or sea - smooth, level, mostly crater free areas and the lighter surface of the moon called highlands - higher in elevation and heavily cratered areas.
		The genesis rock was collected during the Apollo 15 mission.
	www.suite101.com /article.cfm/science_surfing/116801 (359 words)

	World Almanac for Kids
		The moon rotates on its axis once in about the same period of time that elapses for its sidereal period of revolution, accounting for the fact that virtually the same portion of the moon is always turned toward the earth.
		The moon’s magnetic field is not as strong or widespread as that of the earth.
		Then, in 1975, having studied moon rocks and close-up pictures of the moon, scientists proposed what has come to be regarded as the most probable of the theories of formation, planetesimal impact.
	www.worldalmanacforkids.com /explore/space/moon.html (1886 words)

	Earth's Moon
		Since the moon is fairly close to the earth, it seems larger than the stars and even as large as the sun.
		Moon rocks are composed of minerals including aluminum, calcium, magnesium, oxygen, silicon, and titanium.
		In the new moon phase, the side of the moon is lighted by earthshine, sunlight that is reflected from the earth to the moon.
	library.thinkquest.org /25097/graphics/moon.htm (1691 words)

	Moon anomalies
		The oldest age for the Earth is estimated to be 4.6 billion years old; moon rocks were dated at 5.3 billion years old, and the dust upon which they were resting was at least another billion years older.
		Moon's Origin: Before the astronauts' moon rocks conclusively disproved the theory, the moon was believed to have originated when a chunk of Earth broke off eons ago (who knows from where?).
		Stranger still, the moon's center of mass is about 6000 feet closer to the Earth than its geometric center (which should cause wobbling), but the moon's bulge is on the far side of the moon, away from the Earth.
	www.geocities.com /jilaens/moon.htm (1506 words)

	Top 10 Scientific Discoveries from Apollo (Site not responding. Last check: 2007-10-21)
		The Moon is not a primordial object; it is an evolved terrestrial planet with internal zoning similar to that of Earth.
		The Moon possesses a thick crust (60 km), a fairly uniform lithosphere (60-1000 km), and a partly liquid asthenosphere (1000-1740 km); a small iron core at the bottom of the asthenosphere is possible but unconfirmed.
		Moon rock ages range from about 3.2 billion years in the maria (dark, low basins) to nearly 4.6 billion years in the terrae (light, rugged highlands).
	www.lpi.usra.edu /expmoon/science/lunar10.html (950 words)

	The Moon
		The moon's gravity is one-sixth that of the Earth's; a man who weighs 180 lbf (pound-force) on Earth weighs only 30 lbf on the Moon.
		The Moon was heavily bombarded early in its history, which caused many of the original rocks of the ancient crust to be thoroughly mixed, melted, buried, or obliterated.
		This concentration may be explained by the fact that the Moon's center of mass is offset from its geometric center by about 2 kilometers (1.2 miles) in the direction of Earth, probably because the crust is thicker on the farside.
	www.solarviews.com /eng/moon.htm (2472 words)

	Project Apollo: A Selective Bibliography of Books
		Early in its history, the Moon was melted to great depths to form a "magma ocean." The lunar highlands contain the remnants of early, low-density rocks that floated to the surface of the magma ocean.
		The surface of the Moon is covered by a rubble pile of rock fragments and dust, called the lunar regolith, that contains a unique radiation history of the Sun, which is of importance to understanding climate changes on Earth.
		Surface rocks and mineral grains are distinctively enriched in chemical elements and isotopes implanted by solar radiation.
	www.hq.nasa.gov /office/pao/History/ap11ann/top10sci.htm (943 words)

	What's New on the Moon?
		Despite these similarities, Moon rocks are basically different and it is easy to tell them apart by analyzing their chemistry or by examining them under a microscope.
		It is the boundary layer between the Moon and outer space, and it absorbs the matter and energy that strikes the Moon fro the Sun and the rest of the universe.
		Before we explored the Moon, there were three main suggestions to explain its existence: that it had formed near the Earth as a separate body; that it had separated from the Earth; and that is had formed somewhere else and been captured by the Earth.
	www.windows.ucar.edu /tour/link=/teacher_resources/new_on_moon.html (2685 words)

	The Moon - Zoom Astronomy
		The moon is a cold, dry orb whose surface is studded with craters and strewn with rocks and dust (called regolith).
		Also, from any spot on the moon (except on the far side of the moon where you cannot see the Earth), the Earth would always be in the same place in the sky; the phase of the Earth changes and the Earth rotates, displaying various continents.
		Libration is a rocking movement of the Moon.
	www.enchantedlearning.com /subjects/astronomy/moon (1475 words)

	PSRD: The Oldest Moon Rocks
		For example, volcanism on the Earth and Moon overlapped in time for about a billion years, yet the Moon's crust is sufficiently old that it preserves direct evidence for planetary-scale events that occurred before the Earth's surface stabilized.
		Lunar scientists have developed criteria such as low abundances of siderophile elements (which are present in high concentrations in most meteorites relative to common igneous rocks) and other chemical and petrographic data, to identify a suite of rocks thought to represent primary igneous cumulates from the lunar highlands.
		This range of ages provoked a strong challenge to the idea that all of these rocks crystallized from the magma ocean, and lead to proposals for alternative styles of lunar evolution perhaps involving formation of the crust through a series of smaller, unrelated magmatic events.
	www.psrd.hawaii.edu /April04/lunarAnorthosites.html (2450 words)

	Moon Rock FAQs and other Science resources - FamilyEducation.com
		About 20 percent of the moon rocks are kept nearby in another building as a sort of safe deposit box, in case disaster were to strike Building 31.
		After studying the moon rocks and finding what ways they are similar to and what ways they are different from earth's rocks, a new theory stands out.
		The study of the moon rocks has created the field of planetary science and now Mars is the next big thing, even though it takes at least two years to reach Mars, and at the time of the Apollo flights, it took only three days to reach the moon.
	school.familyeducation.com /astronautics/moon/38470.html (1647 words)

	Moon Rocks through a Microscope
		Plutonic Igneous Rocks of the Moon: The original crustal rocks of the Moon, which constitute most of the Lunar Highlands, were rich in the mineral Feldspar, consisting of Anorthosites (Feldspar-only rocks), Norites (Feldspar-pyroxene rocks) and Troctolites (Feldspar-olivine rocks).
		The old Lunar crust was feldspar-rich because when the Moon differentiated internally, and its interior was molten (a Lunar Magma Ocean) feldspar which crystallized from this melt was buoyant and floated toward the surface, while denser, iron-rich minerals along with most of the olivine and pyroxene sank to the bottom.
		These rocks form when fragment of shattered rock either are smashed together by the collision, sintered together by the heat of collision, or are cemented together by infiltrating impact melt.
	www.cas.usf.edu /~jryan/moonrocks.html (1059 words)

	Geotimes - September 2002 - Moon Rocks
		At the conclusion of the Apollo missions, a second round of plaques were made from samples of the moon rock geologist and astronaut Harrison H. “Jack” Schmitt collected and dedicated to the children of the world during his Apollo 17 mission.
		Agents seized the rock from its location in a safety deposit box in November 1998 with the argument that it was a piece of property considered stolen, smuggled or clandestinely imported or introduced into the United States.
		One Lucite Ball Containing Lunar Material (One Moon Rock) and One Ten Inch by Fourteen Inch Wooden Plaque,” is one of forfeiture, where the court makes the final call as to the owner of the property.
	www.geotimes.org /sept02/NN_moon.html (1724 words)

	Melting the Moon :: Astrobiology Magazine ::
		New age measurements of lunar rocks returned by the Apollo space missions have revealed that a surprising number of the rocks show signs of melting about 3.9 billion years ago, suggesting that the moon - and its nearby neighbor Earth - were bombarded by a series of large meteorites at that time.
		Tiny melted fragments from the lunar rocks were dated at the noble gas geochronology laboratory at Oregon State.
		Many of the moon's craters are 10 to 100 kilometers across and scientists say that meteorites of that size or larger may have struck the Earth in the past.
	www.astrobio.net /news/modules.php?op=modload&name=News&file=article&sid=1927&mode=thread&order=0&thold=0 (999 words)

	Hands-On Activities (Site not responding. Last check: 2007-10-21)
		The most abundant are called norites and troctolites, rocks composed of equal amounts of plagioclase and either olivine or pyroxene (both silicate minerals containing iron and magnesium).
		Highland rocks are difficult to work with because all that cratering, so evident in photographs of the highlands, has taken its toll on the rocks.
		It could be that the apparent clustering in rock ages reflects poor sampling—we may only have obtained samples from one or two large impact basins.
	lunar.arc.nasa.gov /education/teacher/teacher2.htm (985 words)

	NPR : Lunar Secrets (Site not responding. Last check: 2007-10-21)
		This is a Japanese mission to image the moon, monitor moonquakes, measure the near-surface thermal properties and heat flux, and study the lunar core and interior structure.
		LunarSat is a European proposal for a lunar micro-orbiter to investigate the suitability of the moon's south pole for the first permanent human outpost.
		It's thought that the moon was orbiting much closer to the Earth then; it's possible it could have swept up some of the debris.
	www.npr.org /programs/wesun/features/2002/moonrevisit/index.html (678 words)

	Case Study
		The current debate over moon rocks is not the buying and selling of moon rocks but in the acquisition of moon rocks from the moon and if any body has the right to exploit the resources on the moon.
		Current Prices for moon rocks and dust are: a few milligrams of lunar dust sold at a Superior Galleries auction in California in 1993 for $42,500, and one carat moon rock sold for approximately $442,000 at Sotheby's in New York.
		The original reason the moon treaty was created was because of the wording in the original Outer Space Treaty which left out private entities as not being able to own or exploit the moon and the natural resources on the moon.
	www.american.edu /TED/moonrock.htm (1697 words)

	Apollo Lunar Module - Lunar Rocks
		The Moon is made of rocks and the lunar surface is covered with dust or a layer of fine broken-up powder about 1 to 20 meters deep.
		Geologic samples returned from the Moon by the Apollo lunar surface exploration missions (1969-1972), along with associated data records, are physically protected, environmentally preserved, and scientifically processed in a special building dedicated for that purpose at the Johnson Space Center in Houston, Texas.
		Detailed information from the Moon rocks has helped scientists look at new ways to explain the formation of the Moon and led to the impact theory.
	www.sln.org /pieces/schutte/currrocks.html (946 words)

	CNN - Customs agents seize 4-billion-year-old moon rock - December 7, 1998
		A moon rock, thought to be 4 billion years old, was brought back by Apollo 17 astronauts in 1972
		The fingernail-sized moon rock, weighing barely more than a gram, was brought back to Earth by Apollo 17 astronauts in 1972.
		NASA officials at Johnson Space Center in Houston verified that the rock is indeed from the moon, and that it was the one given to Honduras.
	www.cnn.com /US/9812/07/moon.rock (566 words)

	The Great Moon Hoax
		Astronaut Buzz Aldrin on the surface of the Moon in 1969.
		McKay is a member of the group that oversees the Lunar Sample Laboratory Facility at JSC where most of the Moon rocks are stored.
		An average person holding a Moon rock in his or her hand can plainly see that the specimen came from another world.
	www.solarviews.com /eng/moonhoax.htm (1410 words)

	The Moon
		The Moon's gravitational attraction is stronger on the side of the Earth nearest to the Moon and weaker on the opposite side.
		When the Moon's rotation rate was slowed to match its orbital period (such that the bulge always faced toward the Earth) there was no longer an off-center torque on the Moon and a stable situation was achieved.
		Actually, the Moon appears to wobble a bit (due to its slightly non-circular orbit) so that a few degrees of the far side can be seen from time to time, but the majority of the far side (left) was completely unknown until the Soviet spacecraft Luna 3 photographed it in 1959.
	www.nineplanets.org /luna.html (1695 words)

	Lunar Rocks
		They are like nothing else on Earth and they couldn't have been constructed artificially because they bear the evidence of billions of years exposure to a vacuum, high energy cosmic rays, tiny asteroids and virtually no water.
		Moon rocks are certainly non-terrestrial basalt in origin, and do not match in composition any other extraterrestrial rocks (i.e.
		These rocks are genuine, and have spent, oh, the last 5 billion years or so in an oxygen-poor, radiation-bombarded environment (fusion trails...ask me later)
	www.redzero.demon.co.uk /moonhoax/Rocks.htm (270 words)

	Curator's Choice - Apollo Moon Rocks (Site not responding. Last check: 2007-10-21)
		The samples on display at the Museum are fragments of larger rock samples collected on the Moon by Apollo astronauts.
		All of the lunar rocks have been divided into pieces so that they may be studied.
		This rock is called a basalt and its age is measured at 3.3 billion years old.
	www.nasm.si.edu /exhibitions/cchoice/moonrocks/moonrocks2.htm (194 words)

	Earth rocks on the Moon
		(The Moon itself is a big piece of Earth that sundered when a Mars-sized planetestimal hit 4.5 billion years ago.) During the Period of Heavy Bombardment, the Moon was considerably closer to the Earth than it is now, perhaps 3 times closer.
		While Moon rocks are dry, some Earth rocks contain hydrated minerals--those which have water incorporated into their molecular structure.
		In this case, traveling to the Moon may be the only way we can ever understand the early chaotic period of Earth's formation.
	science.nasa.gov /headlines/y2002/18oct_earthrocks.htm (1286 words)

	Whatever Happened To... Moon Rocks? - - science news articles online technology magazine articles Whatever Happened ... (Site not responding. Last check: 2007-10-21)
		Worth up to 10 times their weight in top-grade diamonds, most of these rocks are packed away in cabinets at government strongholds like the Johnson Space Center in Texas and the White Sands Test Facility in New Mexico.
		But more than a few pebbles have gotten loose: A fistful of pea-size rocks were given away in the 1970s as gifts from the American government to each of the 50 states as well as to 135 other nations.
		Just this past January, three rocks were swiped from a van en route to a Virginia elementary school, on their way to a show-and-tell.
	www.discover.com /issues/jul-06/rd/whatevermoonrocks (284 words)

	NOVA Online \| To the Moon \| Origins
		In this model, the Earth and the moon formed independently, side by side as it were, from the same material that formed all the planets of our solar system.
		Studies of radiogenic elements and isotopes in lunar rocks reveal that the two bodies are roughly the same age, 4.5 billion years old.
		The fission theory might explain the moon's lack of a large core and the oxygen-isotope similarity, astronomers say, but calculations show that the Earth would have to have had four times its present angular momentum—a lightning-fast rotational speed that astronomers cannot square in their models.
	www.pbs.org /wgbh/nova/tothemoon/origins.html (1488 words)

	Science Monster - Our Solar System: Our Moon
		Scientists think that the moon has a small iron rich core that used to be molten (hot liquidy stuff), but is now solid.
		This is surrounded by a layer of iron rich rocks that we call the plastic asthenosphere.
		The cool thing is that we've actually BEEN to the moon and brought home a bunch of moon rocks and moon dirt from this crust!
	www.sciencemonster.com /planets_ourmoon.html (563 words)

	The Moon Rocks / Earth Rocks Collection
		The Moon rocks collected from the lunar surface during the Apollo missions are priceless, and are NOT available to the public for actual hands-on study.
		The Moon Rock / Earth Rock Collection was created by bringing together a set of Earth rocks that match the Moon rocks closely in mineral content and structure.
		The details of rock and mineral sample selections are proprietary to Jensan Scientifics.
	www.sciencemall-usa.com /moonrocearro.html (180 words)

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