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It will abandon the idea that the eight planets in the solar system other than Pluto are called "classical planets", thus confirming that there are only eight planets in the solar system, and Pluto was lowered.
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There are dark parts and bright areas above the Moon. When early astronomers looked at the Moon, they thought that the dark areas were covered with seawater, so they called them "seas". The famous ones are the sea of clouds, the wet sea, the still sea, etc.
The bright part is the mountains, which are dotted with craters. Located near Antarctica, the Bailey crater is 295 kilometers in diameter and can fit the entire island of Hainan. The deepest mountain is Newton's crater, which is 8,788 meters deep.
In addition to craters, there are also ordinary mountains on the lunar surface. Mountains and deep valleys are stacked on top of each other, creating a unique scenery.
The crust of the Moon is on average 68 kilometers thick, from zero kilometers under the Mare Crisium to 107 kilometers on the far side of the Korolev Circle. Beneath the Earth's crust is the mantle, which may also be its core. However it does not resemble the Earth's mantle, and the Moon is only partially particularly hot.
Curiously, the Moon's center of mass and its geometric center are offset by 2 kilometers towards the Earth. Similarly, its crust is thinner on this side.
There are two main types of terrain on the lunar surface: huge craters with ancient plateaus and relatively smooth and young terrain (covering up to 16 lunar surfaces) eroded by volcanic eruptions of red-hot lava. Most of the surface is covered by a layer of dust and stone fragments from meteor impacts.
For unknown reasons, Maria's terrain is concentrated on the side of the Earth.
Most of the craters close to the Earth, volcanoes are named by famous appellations in the history of science, such as Tycho, Copernicus, and Ptolemy. The ones on the back are mostly named after modern times, such as Apollo, Gagarin, and Korolev (because the first one was taken by Luna-3, it has a clear Russian bias). In addition, similar to the near region, there is also a giant crater South Pole-Aitken on the far side of the moon, with a diameter of 2,250 kilometers and a depth of 12 kilometers, making it the largest impact basin in the solar system, and forming a mountain mountain on the west side, which has become a typical heavy ring mountain in the solar system.
View from Earth; Center on the left).
The Apollo and Luna programs brought back a sample of a stone weighing 382 kilograms. These provide us with detailed knowledge about the Moon. They are of particular value, and twenty years after landing on the moon, scientists are still working on this very early sample.
The vast majority of stones on the surface of the Moon appear to be between 30 and 4.6 billion years old, which is a fortuitous coincidence with the extremely rare stones on Earth that are more than 3 billion years old. In this way, the Moon provides evidence of the early history of the solar system that cannot be found on Earth.
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The surface of the moon is glassy, and there are features on the moon such as the lunar sea, mountains, craters, and radiation streaks.
There are many mountains on the moon that are more spectacular than the earth, and the bright part is the mountains, which are full of mountains and craters. The surface of the moon is a potholed and undulating terrain, full of craters full of holes, and it is a desolate and lonely world.
Features of the Moon:
Everything on the moon is different from that on Earth. The gravity of the moon is equivalent to 1 6 of the earth, so it is possible to jump very high on the lunar surface. The attraction on the moon is so small that it can't even absorb air, and the surface of the moon has almost no atmospheric protection, so it is smashed into craters and devastation.
The moon itself does not emit light, only reflects sunlight. The brightness of the Moon varies with the angular distance between the Sun and the Moon and the distance between the Earth and the Moon, and the brightness of the Full Moon is more than ten times greater than that of the upper and lower strings. Because there is no air surrounding, the temperature on the lunar surface is not regulated, and under the irradiation of the sun, the temperature can reach more than 100 degrees Celsius during the day, and drop to more than minus 100 degrees at night, a huge temperature difference for both astronauts and lunar rovers.
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The surface of the moon has dark parts and bright areas, the bright areas are highlands, and the dark areas are low-lying areas such as plains or basins, which are called lunar lands and moon-seas, respectively. When early astronomers looked at the Moon, they thought that the dark areas were covered with seawater, so they called them "seas". The famous ones are the sea of clouds, the wet sea, the still sea, etc.
The bright part is the mountains, which are dotted with craters, or impact craters, which are low-lying forms of annular uplift. There are more than 33,000 impact craters on the moon with diameters greater than 1,000 meters.
The Bailey crater, located near Antarctica, is 295 kilometers in diameter and could fit the entire island of Hainan. The deepest mountain is the Newton impact crater, which is 8,788 meters deep. In addition to impact craters, there are also ordinary mountains on the lunar surface.
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There are a large number of craters on the surface, as well as a flat lunar sea (i.e., the plains on the moon) and a large number of plateaus (i.e., the yellowish part of the moon).
<> nematodes are the phylum nematodes, nematodes, one of the most abundant in the animal kingdom, parasitic animals and plants, or live freely in the soil, fresh water and seawater environment, the vast majority of self-living life, parasitic life, only a very small part of the parasitic life in the human body and cause diseases. There are 35 species of nematodes found in China. Currently, endemic nematodes include roundworms, whipworms, pinworms, hookworms, trichinella and strongyloides.
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