写一篇关于太阳,地球和月球比大小,距离,颜色英语作文

写一篇关于太阳,地球和月球比大小,距离,颜色英语作文
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The moon origin mystery: for lunar origins, scientists put forward three kinds of theories: capture said, homology and earth divided them all defective, said, but the Apollo would help proof, which seem least likely theory is the best theory. Some scientists think, the moon is with earth in 46 billion years ago, from a group of cosmic dust generator. Another theory is that the moon is the earth's "children", is perhaps the Pacific "dig" out. However Apollo moon exploration results show that the earth and the moon the composition of the difference is very big, some scientists have proposed another hypothesis, namely "captured". They think that the moon is accidentally broke into gravitational field, and be locked in the present orbit. However, it is theoretically explain the process mechanism, is extremely difficult. Therefore, the above three theory all difficult to hold water. As robin hallam especially by dr said: "to explain the moon does not exist, than to explain the moon exist easier."
The moon age riddle: what is amazing is that the rock samples from the moon back, via analysis found that about 99 percent age than earth 90% oldest rocks more older. Armstrong in "quiet sea" after landing picked up the first piece of rock's age is 36 billion years old. Some other rock age 4.3 billion years old, 4.6 billion years old and 45 billion years old — — it almost and earth and solar system itself, the earth is as old as the oldest rocks is 37 billion years old. In 1973, the world symposium on the moon was a age determination for 53 billion years old of moon rocks. Is more surprising is that these ancient rocks are collected from scientists believe to be the youngest area on the moon. In light of the evidence, some scientists propose that the moon on earth formed before long was established in interstellar space formed.
The lunar soil years older than rock greater mystery: the moon ancient rock has made scientists helpless, however, and these rocks, compared to the surrounding soil rock is young. According to the analysis, soil age at least 10 years than rock. At first glance, sounds, this is impossible because scientists think these soils are rock after smashing formation. But, determination of rock and soil chemical composition, the scientists found that, after the soil and rock is irrelevant, seem to come from elsewhere.
When a massive object when the moon, the moon hit send hollow balls like voice mystery: in Apollo exploration process, abandoned the rockets third quarter thrusters will boom the bump on the surface of the moon. According to NASA document records, "each such noise, sounds like a big the sound of the bell". When the moon landing in color special personnel black plains, they found on the surface of the moon drilling very difficult. Soil sample by analysis found that, which contains a large number of rare earth metal titanium (it was used in the supersonic jet and spacecraft on); Others, such as zirconium, hard metal iridium, beryllium content is also very rich. This makes scientists puzzled, because these metal only in high temperature — — about 45 degrees Fahrenheit, will and surrounding rock as a whole.
Stainless iron mystery: lunar surface rock sample still contain among them pure iron granules, scientists think they are not from meteorites. The former Soviet union and American scientists has found a more strange phenomenon: these pure iron granules on earth put seven years is not rust. In the scientific world, didn't rusty pure iron is unheard of.
The moon radioactive mystery: the moon in thickness of eight miles surface is radioactive, this also is a astonishing phenomenon. When "Apollo 15th" astronauts using temperature timing, they found reading extraordinarily high, which suggests that Italy plain nearby heat flux indeed temperature is very high. A scientist exclaimed, "oh god, this land will soon melted! The moon's core must be more hot." However, is it surprising is that month heart temperature is not high. The heat from the surface of the moon of radioactive substances emit, but these radioactive substances (uranium and plutonium, thallium) and where do you come from? If they are from the heart, so how could they on to the surface of the moon?
Dry on the moon is large hydrosphere mystery: the first few times that the moon, the moon is a dry celestial bodies. A scientist had assert that it than the gobi desert dry 100 million times. Apollo missions of the first few times are not on the surface of the moon found any water trace. But "Apollo 15th" scientists has detected the surface of the moon is one place 100 square miles of water gas. Scientists red face argue that this is the American astronaut waste in the moon two small tank leakage causes. But such small tank can produce such a large hydrosphere? Of course this is not astronauts — — it directly spray urine to the moon in the sky. It seems that these moisture from the moon internal.
The surface of the moon is glass shape puzzle: Apollo astronauts discovered many places, the surface of the moon is covered with glass shape material, which suggests that the surface of the moon appears to be burning fiery fireball. As one scientist has pointed out, "the moon with glass." Expert analysis proof, this layer of glass of substance is not huge meteoritic impact generated, some scientists believe that, this is the explosion of the sun — — some miniature nova state — — consequences.
The moon of the magnetic field mystery: early detection and studies show that the moon, but almost no magnetic field of moon rocks analysis has proved it had strong magnetic field. This phenomenon makes scientists dumbfounded Paul jester doctor declared: "here is very strange magnetic rock... is quite beyond our expectation." If the moon had magnetic field, it should have an iron core, but of reliable evidence shows that the moon may not have such a core, And the moon will not possible from other objects (such as earth) obtain magnetic field, because if it is indeed the case, then it must be very close from earth, then it will be gravity ripped to pieces.
The moon internal mysterious "material aggregation point" mystery: 1968, flying around the moon, the moon probe the first to show the below the surface exist "material gathered structures". When the spacecraft flying over these structures over, due to their great gravity, shuttle flight will slightly below the prescribed orbit, but when the ship leave these structures clouds, it will speeding slightly, it clearly shows that the material gathered structure exists, and their great quality. Scientists think, these structures is like a bull 's-eye, by heavy elements constitute, hidden in the surface of the moon "hai" below. As one scientist has said: "it seems that who also don't know how to deal with them."