The origins and features of the moon

what is the moon made of

For example, after the moon solidified, maybe later material from Earth was ejected and settled on top. You might start by asking them to look in the same areas, and have the student who finds a certain feature first raise his or her hand.

Is the moon a star

Ask students the following questions. With too sparse an atmosphere to impede impacts, a steady rain of asteroids, meteoroids, and comets strikes the surface. Radiometric dating of rocks returned from the Moon has provided an absolute time scale. Name two craters that are have rays. Students identify surface features of the Moon. The spectrometer observed absorption lines common to hydroxyl , in reflected sunlight, providing evidence of large quantities of water ice, on the lunar surface. Although only a few multi-ring basins have been definitively dated, they are useful for assigning relative ages. Asphaug has proposed that a slow merger of two moons, which he called a "giant splat," may be responsible for the lopsidedness. These missions—and the manned landings that followed—revealed that the regolith was only somewhat compressible and was firm enough to be supportive. Because impact craters accumulate at a nearly constant rate, counting the number of craters per unit area can be used to estimate the age of the surface. Then, over a period lasting until perhaps three billion years ago, a long sequence of volcanic events flooded the giant basins and surrounding low-lying areas with magma originating hundreds of kilometres within the interior. The early Moon may have developed an internal dynamo, the mechanism for global magnetic fields for terrestrial planets. Many are named. I wonder if Apollo is representative of the moon as a whole or just the near side?

At the outset, it is important to note that we assume that the physical and chemical laws that govern nature are constant. Moreover, many of the Moon's surface features have become well known, especially since the days of Galileo, the first to study the Moon through a telescope.

It has a geochemically distinct crustmantleand core. The mountainous far side, he said, may be a second moon that collided slowly with the first and formed a cold, thick layer. These light and dark areas represent rocks of different composition and ages, which provide evidence for how the early crust may have crystallized from a lunar magma ocean.

While creating the Rectified Lunar Atlas—one of the first maps of the moon —during the height of the space race, Hartmann identified a giant ringed impact crater on the side of the moon.

We now have over kg of rocks from nine places on the Moon, rocks that have been analyzed by hundreds of scientists from many different countries. For example, it was discovered centuries ago that the Moon revolves about Earth and not the Sun and is thus a natural satellite the largest in the inner solar system.

When exposed to solar radiation, water quickly decomposes through a process known as photodissociation and is lost to space. The lithosphere is approximately km thick.

phases of the moon
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The Origins Of The Man In The Moon