NASA`s Lunar Gravity Maps
... definite structure from early times, determined either by the way it was accreted or by the way it was torn from the Earth. Those density variations must predate any later impacts. Later impacts cannot determine—by themselves—the interior densities. To propose that craters follow overall gravity, Z ...
... definite structure from early times, determined either by the way it was accreted or by the way it was torn from the Earth. Those density variations must predate any later impacts. Later impacts cannot determine—by themselves—the interior densities. To propose that craters follow overall gravity, Z ...
Moon phase Powerpoint
... top, about its axis once each day. • 3. Waning – appears to shrink • 4. Waxing – appears to be growing • 5. Gibbous - Swollen on one side • 6. Crescent – less than ½ the moon is visible. • 7. Revolve- the motion of one object around another ( the moon revolves around Earth) ...
... top, about its axis once each day. • 3. Waning – appears to shrink • 4. Waxing – appears to be growing • 5. Gibbous - Swollen on one side • 6. Crescent – less than ½ the moon is visible. • 7. Revolve- the motion of one object around another ( the moon revolves around Earth) ...
Earth Time, Moon Phases and Eclipses
... contain water, they are large flat areas where lava flows occurred millions of years ago. The Sea of Tranquility is the location of the first manned Moon landing in ...
... contain water, they are large flat areas where lava flows occurred millions of years ago. The Sea of Tranquility is the location of the first manned Moon landing in ...
Lecture19-ASTA01 - University of Toronto
... • We know that the Moon is too small to have retained any atmosphere, so strolling on the surface requires a spacesuit similar to that used by astronauts. • As well, plans for such exploration would have to include the fact that the temperature difference from sunshine to shade is extreme. ...
... • We know that the Moon is too small to have retained any atmosphere, so strolling on the surface requires a spacesuit similar to that used by astronauts. • As well, plans for such exploration would have to include the fact that the temperature difference from sunshine to shade is extreme. ...
Terra Aqua
... 1. Most probably, the Oort Cloud Comets studied so far (Halley, Hale-Bopp, and Hyakutake) are not representative of all comets. 2. The D/H measurements available are not of the solid nucleus, but of gases emitted during sublimation, because the differential diffusion and sublimation of HDO and H2O m ...
... 1. Most probably, the Oort Cloud Comets studied so far (Halley, Hale-Bopp, and Hyakutake) are not representative of all comets. 2. The D/H measurements available are not of the solid nucleus, but of gases emitted during sublimation, because the differential diffusion and sublimation of HDO and H2O m ...
Chapter 30 - TeacherWeb
... Saturn has thick bright rings of gas and dust that are its most noticeable feature as well as 20 moons. ...
... Saturn has thick bright rings of gas and dust that are its most noticeable feature as well as 20 moons. ...
Ex3-Planets,F10
... significantly modified by the influence of wind, running water, ice, waves or gravity. One very important consideration in studying the history of a planetary surface is to determine the age of the surface under study. Impacts occurred at the greatest rate early in the history of the solar system, a ...
... significantly modified by the influence of wind, running water, ice, waves or gravity. One very important consideration in studying the history of a planetary surface is to determine the age of the surface under study. Impacts occurred at the greatest rate early in the history of the solar system, a ...
Ch21: Moon and Mercury
... d. Most impacts occur from directly overhead. e. A circle is the most perfect form. ...
... d. Most impacts occur from directly overhead. e. A circle is the most perfect form. ...
Resources - Lunar and Planetary Institute
... This site includes paths for inquisitive adults, students, and formal and informal educators to find online resources, information, and opportunities for involvement in lunar science and exploration. Moon Zoo http://www.moonzoo.org/ Moon Zoo uses about 70,000 high resolution images gathered by the L ...
... This site includes paths for inquisitive adults, students, and formal and informal educators to find online resources, information, and opportunities for involvement in lunar science and exploration. Moon Zoo http://www.moonzoo.org/ Moon Zoo uses about 70,000 high resolution images gathered by the L ...
The Moon and Mercury
... the exploration of the planets. In this chapter, we begin that detailed study with two goals in mind. First, we search for evidence to test the solar nebula hypothesis for the formation of the solar system. Second, we search for an understanding of how planets evolve once they have formed. The moon ...
... the exploration of the planets. In this chapter, we begin that detailed study with two goals in mind. First, we search for evidence to test the solar nebula hypothesis for the formation of the solar system. Second, we search for an understanding of how planets evolve once they have formed. The moon ...
... Imaginative planetary scientists have proposed several explanations for the dramatic increase in the impact rate at about 3.9 billion years ago. One is the leftovers model. This idea proposes that there were a lot of small bodies left over after the formation of the inner planets, enough to make abo ...
The Moon and Beyond
... lunar orbit. It would be placed so that its orbit passes over the north and south poles of the moon instead of be~nghmited to the region around the lunar equator analyzed by the Apollo missions. The Lunar Polar Orbiter will make it possible to extend the scientific measurements that so far have been ...
... lunar orbit. It would be placed so that its orbit passes over the north and south poles of the moon instead of be~nghmited to the region around the lunar equator analyzed by the Apollo missions. The Lunar Polar Orbiter will make it possible to extend the scientific measurements that so far have been ...
Moon Poster
... that radiate out from it in all directions were once splashes of molten rock, thrown out by the impact that originally made the crater. In July 1969 Apollo 11 landed in the Mare Tranquillitatis, (Sea of Tranquility). Five other missions landed successfully. ...
... that radiate out from it in all directions were once splashes of molten rock, thrown out by the impact that originally made the crater. In July 1969 Apollo 11 landed in the Mare Tranquillitatis, (Sea of Tranquility). Five other missions landed successfully. ...
Quark Presents: Holiday Tour of the Star System Sol
... the lunar mare (dark colored basins) Crater density provides relative dating for lunar surfaces ...
... the lunar mare (dark colored basins) Crater density provides relative dating for lunar surfaces ...
INTRO. TO EARTH AND ENVIRONMENTAL HAT REVIEW
... space into Earth’s atmosphere The first four planets are made of gas/rock. *asteroid – one of many planets that revolve The last four planets are made of gas/rock. the sun *comet – an object in outer space that produces Role of Gravity: a big, shiny tail near the sun Label where the low tides are lo ...
... space into Earth’s atmosphere The first four planets are made of gas/rock. *asteroid – one of many planets that revolve The last four planets are made of gas/rock. the sun *comet – an object in outer space that produces Role of Gravity: a big, shiny tail near the sun Label where the low tides are lo ...
PSRD: Titanium Isotopes Provide Clues to Lunar Origin
... Earth, Moon, and assorted meteorite groups. Moon (red line) and Earth (blue line) values are identical to within 0.04 ε units, or only 4 parts per million. The other materials range left and right of the Earth-Moon value; see the color bars, individual data points for the terrestrial and chondrite s ...
... Earth, Moon, and assorted meteorite groups. Moon (red line) and Earth (blue line) values are identical to within 0.04 ε units, or only 4 parts per million. The other materials range left and right of the Earth-Moon value; see the color bars, individual data points for the terrestrial and chondrite s ...
Wandering Gas Giants and Lunar Bombardment
... PSRD: Wandering Gas Giants and Lunar Bombardment This is the story of the early Solar System being developed by physicists and astronomers, including Morbidelli, Tsiganis, Gomes, and Levison. Current theory says that migrating planets are a natural consequence of planet formation. Such migration wo ...
... PSRD: Wandering Gas Giants and Lunar Bombardment This is the story of the early Solar System being developed by physicists and astronomers, including Morbidelli, Tsiganis, Gomes, and Levison. Current theory says that migrating planets are a natural consequence of planet formation. Such migration wo ...
Lecture4
... can only occur at new moon. Solar eclipses can be partial, total, or annular. Coincidence that the angular size of the Sun and Moon are the same! ...
... can only occur at new moon. Solar eclipses can be partial, total, or annular. Coincidence that the angular size of the Sun and Moon are the same! ...
ppt
... • Samples from specific impact craters – Crater ejecta (cosmic ray exposure ages, up to ~200 million years old – Impact melt rocks (some ejected, most on floors of craters) – Accuracy of ±1% of age (i.e., 0.6 My for crater formed 65 My ago) – Large range of crater sizes (1 to ~25 km) – Implies sampl ...
... • Samples from specific impact craters – Crater ejecta (cosmic ray exposure ages, up to ~200 million years old – Impact melt rocks (some ejected, most on floors of craters) – Accuracy of ±1% of age (i.e., 0.6 My for crater formed 65 My ago) – Large range of crater sizes (1 to ~25 km) – Implies sampl ...
Day 10 - Lick Observatory
... – Some surface features look like dry riverbeds. – Some craters appear to be eroded. – Rovers have found rocks that appear to have formed in water. – Gullies in crater walls may indicate recent ...
... – Some surface features look like dry riverbeds. – Some craters appear to be eroded. – Rovers have found rocks that appear to have formed in water. – Gullies in crater walls may indicate recent ...
The Earth and Moon
... HOW DOES THE MOON MOVE? • It takes about 29.5 days for the moon to make 1 revolution around the Earth. • The moon has a synchronous rotation with the Earth. • Synchronous Rotation- the Earth and moon rotate in the same direction at the same pace. • That’s why we only see one side of the moon at nig ...
... HOW DOES THE MOON MOVE? • It takes about 29.5 days for the moon to make 1 revolution around the Earth. • The moon has a synchronous rotation with the Earth. • Synchronous Rotation- the Earth and moon rotate in the same direction at the same pace. • That’s why we only see one side of the moon at nig ...
The Hadean Eon on the Moon - Subcommission on Precambrian
... ~550 km, an iron-rich anothosite crust ~60 km thick and, in between, a zone of residual silicate liquid relatively rich in iron and potassium, rare earth elements, phosphorous (urKREEP), and thorium [25]. Interesting and complex as it is, the history [26] of solidification of the lunar mantle, and i ...
... ~550 km, an iron-rich anothosite crust ~60 km thick and, in between, a zone of residual silicate liquid relatively rich in iron and potassium, rare earth elements, phosphorous (urKREEP), and thorium [25]. Interesting and complex as it is, the history [26] of solidification of the lunar mantle, and i ...
Impact Age Dating ASTRO 202 Lecture Thursday, February 14, 2008
... -Even on planets and satellites where we can’ can’t use surface samples to derive absolute ages, we can establish a relative age scale from from crater sizesize-distribution counts -From lunar samples returned to Earth by the Apollo astronauts, we can construct a viable absolute age scale for surfac ...
... -Even on planets and satellites where we can’ can’t use surface samples to derive absolute ages, we can establish a relative age scale from from crater sizesize-distribution counts -From lunar samples returned to Earth by the Apollo astronauts, we can construct a viable absolute age scale for surfac ...
COS Dec.3-2010-short-1 - UCF Physics
... Implications on Origin of Earth’s Water and life • If Earth formed dry where did its water come from? • The composition of Earth’s water is consistent with asteroidal and cometary contributions • Main evidence from Deuterium to Hydrogen ...
... Implications on Origin of Earth’s Water and life • If Earth formed dry where did its water come from? • The composition of Earth’s water is consistent with asteroidal and cometary contributions • Main evidence from Deuterium to Hydrogen ...
Lunar water
Lunar water is water that is present on the Moon. Liquid water cannot persist at the Moon's surface, and water vapor is decomposed by sunlight, with hydrogen quickly lost to outer space. However, scientists have since the 1960s conjectured that water ice could survive in cold, permanently shadowed craters at the Moon's poles. Water molecules are also detected in the thin layer of gases above the lunar surface.Water (H2O), and the chemically related hydroxyl group (-OH), can also exist in forms chemically bound as hydrates and hydroxides to lunar minerals (rather than as free water), and evidence strongly suggests that this is indeed the case in low concentrations over much of the Moon's surface. In fact, adsorbed water is calculated to exist at trace concentrations of 10 to 1000 parts per million. In 1978 it was reported that samples returned by the Soviet Luna 24 probe contained 0.1% water by mass sample.Inconclusive evidence of free water ice at the lunar poles was accumulated from a variety of observations suggesting the presence of bound hydrogen.On 18 November 2008, the Moon Impact probe was released from India's Chandrayaan-1 at a height of 100 kilometers. During its 25-minute descent, the impact probe's Chandra's Altitudinal Composition (CHACE) recorded evidence of water in 650 mass spectra gathered in the thin atmosphere above the Moon's surface. In September 2009, Chandrayaan-1 detected water on the Moon and hydroxyl absorption lines in reflected sunlight.In November 2009, NASA reported that its LCROSS space probe had detected a significant amount of hydroxyl group in the material thrown up from a south polar crater by an impactor; this may be attributed to water-bearing materials – what appears to be ""near pure crystalline water-ice"".In March 2010, it was reported that the Mini-RF on board Chandrayaan-1 had discovered more than 40 permanently darkened craters near the Moon's north pole which are hypothesized to contain an estimated 600 million metric tonnes (1.3 trillion pounds) of water-ice.Water may have been delivered to the Moon over geological timescales by the regular bombardment of water-bearing comets, asteroids and meteoroids or continuously produced in situ by the hydrogen ions (protons) of the solar wind impacting oxygen-bearing minerals.The search for the presence of lunar water has attracted considerable attention and motivated several recent lunar missions, largely because of water's usefulness in rendering long-term lunar habitation feasible.