Astronomers shocking eight Confidential Moon.

<P> Famous psychedelic rock band Pink Floyd was the album "The Dark Side," shocked the world, and not long ago, some astronomers have announced the true dark side of the moon - on the moon is bright .known fact that the same shock </ P> <P> the Moon from the Earth to steal energy </ P> <P> tidal phenomena on Earth are mostly caused by the moon (a little smaller role of the sun), is the secret of tides .like this: As the moon rotate around the Earth, the Earth's oceans by the moon's gravity traction in the face side of the moon to have a climax, which is probably everyone knows. .Meanwhile, the earth away from the other side of the moon also appeared to another climax, this is because the moon's gravity pulling on the role of the Earth itself is greater than its role in water, so the other side of the water out "drum" and .caused. .</ P> <P> the full moon and new moon, the sun, moon and earth are in a line, when an unusually large influx of formation, called synodic tide. .When the moon is in the initial and final quarter of the crescent, the smaller neap tide is formed. .To 29.5 days in the cycle of the moon orbit around the Earth is not a regular circle, when the moon from the Earth to reach the nearest (we call it perigee), the lunar tide to even more than usual, when the tide is called .for the perigee syzygy tide. .</ P> <P> pulling all of these phenomena also produced another interesting effect: by pulling the earth's rotation a little bit of energy is the moon to "steal" away, so that each rotation period of years our planet will reduce .slow 1.5 milliseconds. .</ P> <P> moon fled 3.8 cm per year </ P> <P> when you're reading this, when the moon is slowly slipping away from the Earth. .Each year, the moon is drawn from the earth's rotation a little energy, and use this energy to make himself out on the track deviation 3.8 cm. .Astronomers tell us that when the moon formed, it and the Earth is only 22,530 kilometers away, and now the distance has been widened to 450,000 km, and over time, the moon will go farther and farther. .</ P> <P> moon is egg-shaped </ P> <P> the moon is not round (or spherical). .It is more like an egg shape. .When you give the first full moon in the night sky, it was egg-shaped one of the two cutting-edge Jiuzheng at you. .In addition, the center of mass of the Moon is not at its geometric center, it is off center about two kilometers. .</ P> <P> another moon called "Crew Courtney" </ P> <P> moon is Earth's only natural satellite, right? .Perhaps not. .In 1999, scientists found in Earth's gravity within the control of another asteroid, and its width is 5 miles, it became a satellite of another planet. .</ P> <P> Courtney asteroid known as the Crew, which marched along a horseshoe-shaped orbit around the Earth takes about 770 a week's time. .Scientists believe that it is above the earth like this state of suspension is also able to maintain at least 5,000 years. .</ P> <P> craters were not eroded </ P> <P> on the bumpy surface of the moon is 38-4100000000 years ago by the strong impact of rock in the universe formed. .</ P> <P> this through a strong shock far better than boxing sandbags, rocks are exposed frequently to combat, leaving the holes in the moon is over the body, we call craters. .However, these craters are not subject to much erosion, mainly for two reasons: First, the moon is less active geological activity, so there did not like the Earth by earthquakes, volcanic eruptions and mountain building and the formation of ever-changing topography; .Second, because the moon is almost no atmosphere, there is no wind and rain, so very little surface erosion to occur. .</ P> <P> 400 trees from the earth the moon </ P> <P> on Earth, more than 400 trees from the moon come up. .More precisely, they came from lunar orbit. .Fact, the matter is this: In 1971, Apollo 14 astronaut Stuart Roosa on departure, a package to carry a seed, when his companions 阿兰谢帕德 and busy on the moon Edgar Mitchell .Walking walking surface, Roosa was carefully watching over his seed. .</ P> <P> later, these seeds sprouted on earth, they are planted in many different locations in the United States, and was known as the moon tree. .Most of them looked good. .</ P> <P> why always with a "Moon face" </ P> <P> Perhaps most interesting is the moon always faces the Earth with the same one. .Since the rotation of the earth and the moon are in orbit and along the respective road, which, how can that be? .</ P> <P> long time ago, the Earth's gravitational pull makes the moon's rotation gradually slowed down. .When the moon's rotation to slow cycle and its orbital period (that is, the time it around the globe) identities coincide, this gravitational pull is balanced, on the side toward the Moon from Earth. .Moon, other planets around the solar system also have similar characteristics. .</ P> <P> what moon phase is formed? .Originally, when the moon around the earth, it is part of the time between us and the sun, it is that half of the sun light away from us, then we call the moon. .In this scenario, there are not any dark side of the moon, one that, but we just do not see it. .</ P> <P> when the moon to orbit to the other side, from Earth, it's a small reflection of sunlight from the earth, shall become a curved crescent opinions. .And when the moon is the sun of the Department came, it was in our eyes completely lit up, this is the full moon. .</ P> <P> the mystery of the formation of the Moon </ P> <P> Currently, the most important on the moon, the theory that the moon is about 4.5 billion years ago, due to a size similar to the strong impact of stars on Mars .and across the Earth formed. .Collision at the time a large number of molten rock fragments and dust left behind in orbit around the Earth, after a period of mutual collisions and accumulation to form the moon today. .</ P> <P> strong support for this theory from the discovery of the Apollo program. .Astronauts from the moon collected soil samples showed that minerals on the Moon and Earth are similar, which makes scientists believe the Earth and the Moon share a common origin. .</ P> <P> the collision theory, some scholars hold different views, arguing that the moon and the earth is in the same period, by the same group of rocks and dust separately formed. .But we have from the "Lunar Prospector," the discovery that the moon's core only the quality of the 2% to 4%, far less than the 30% share of the earth core, if they are from the same origin, at least two core .percentage should be similar. .So this argument and is not established. .</ P> <P> more reasonable explanation is that the 4.5 billion years ago, that the collision occurred in the outer layer of the Earth, the Earth's iron core had not been touched, while the outer layer of iron-less, less dense rock .some from out of the formation of the moon. .Thus, the formation of the moon of course can not compare the quality of the core share of the core of the earth. .</ P>.