From ancient times to the present, human beings have always longed for the moon. In ancient times, due to the insufficient development of human technology, the ancients always believed that the moon was where gods lived. There are many legends about the moon, such as Guanghan Palace , Chang'e flew to the moon, etc. Later, with the continuous advancement of human science and technology, humans now have a certain understanding of the moon. Now we know that the moon is actually a satellite of the earth. Among the planets under the sun, there are many Each planet has its own satellites. For example, Jupiter has 79 satellites, Saturn has 82 satellites, and the earth has only one satellite, the moon. Until now, scientists have not studied how the moon was created.
Seeing this, many friends may say that the moon must be captured by the gravity of the earth. Generally speaking, the satellites of the planet are captured, but the size and mass of other satellites and the planet itself differ by at least thousands of times. The satellite of the moon is only dozens of times different from the earth, which makes scientists very puzzled. After calculation, the scientists concluded that according to the gravity of the earth, there is no way to capture the moon. So how was the moon created? Many scientists believe that the moon may once have been part of the earth. In the early days of the solar system, a huge asteroid hit the earth, causing part of the earth to be knocked out by the asteroid, and the part that was knocked out became to the moon.
Although this is just a conjecture of scientists, it also makes sense. In order to explore the mysteries of the moon, scientists have also made a lot of efforts. So far, scientists have landed on the moon many times and brought lunar soil back to the earth. After my country's Chang'e 5 probe landed on the moon, it brought back a lot of lunar soil and conducted research on the lunar soil. According to scientists' research, we can know that there were signs of volcanic activity on the moon 2 billion years ago. This shows that the internal environment of the moon may be very similar to that of the earth. In addition, scientists have also discovered a very rare substance in the lunar soil. This substance is helium-3. In the future, with the advancement of human technology, maybe We will also go to the moon to mine this resource.
Although many countries have landed on the moon, not every moon landing is very successful. In 2019, Israeli spacecraft entered space aboard SpaceX's Falcon 9 rocket. Its purpose was to make the moon surface quiet As a result, when entering the lunar orbit and preparing to land, the probe spacecraft malfunctioned. The probe eventually fell to the moon at a speed of 139 meters per second. At that time, there were many earth creatures on the probe, including one The vitality of living things is very tenacious. This kind of creature is the tardigrade. Many people may not know this kind of creature. Scientists call the tardigrade the toughest creature on the earth.
Why is this creature said to be the toughest creature on earth? Because scientists discovered that this kind of creature existed as early as 500 million years ago. In the five mass extinction events on earth, this kind of creature did not become extinct, but successfully survived. Later, scientists conducted experiments on tardigrades. According to the research, scientists found that the size of this creature is very small, ranging from 0.05 to 1.4 mm. If you want to observe them, you must use a microscope, and this creature basically lives in very extreme environments, such as Antarctica, deep sea, and high mountains. This shows that they are very tenacious and can survive in different environments.
They can hibernate in extreme environments. Hibernation can be divided into low-humidity cryptobiosis, low-temperature cryptobiosis, anoxic cryptobiosis, etc. In this state, tardigrades will stop all metabolism. From a biological point of view It is said that they are dead, but they can still be resurrected, which is very surprising to scientists, and they can survive at a high temperature of 151 degrees Celsius, and can also live at minus 272.8 degrees Celsius. You must know that this temperature has reached absolute zero, and ordinary organisms They have long been frozen to death. In an environment of extreme water shortage, tardigrades will reduce the water content in their bodies from 85% to 3%, so that they can keep their bodies from being dehydrated.
In order to prove that tardigrades are very tenacious, scientists have also done many experiments. Scientists put them under more than 500 rays of radiation, which is equivalent to the radiation after an atomic bomb explosion. Even so, they will die, and in the deep sea, they will also It will not be affected by pressure. Even if the water in the body of tardigrades dries up, as long as they are given some water under normal conditions, they can come back to life. This is the toughest creature discovered by scientists on the earth. So, Could such a creature survive on the moon? Scientists believe that although tardigrades are the toughest life forms on earth, they are also very difficult to survive on the moon.
The temperature difference between day and night on the moon's surface is very large. The temperature during the day is 127 degrees Celsius, and the temperature at night is -183 degrees Celsius. In this exposed environment, they can only survive for a few minutes, and there is no water resources on the moon. When tardigrades After all the water in their bodies is used up, they will die quickly. The reason why tardigrades can survive in extreme environments is because their bodies contain a very powerful DNA that can effectively resist all kinds of viruses. Extreme environments, but their resistance is also limited. If tardigrades cannot die in any environment, then it violates the laws of the universe. One day, all matter in the universe will perish, from life to celestial bodies. all the same.
Our earth and the sun will all die one day. Scientists have found through research that the lifespan of the sun is about 10 billion years. So far, the sun has burned for 5 billion years. In another 5 billion years, the lifespan of the sun will reach the end. At the end, the sun will turn into a red giant and then swallow up the orbits of Mercury, Venus, and the Earth. Then our Earth will cease to exist. If humans want to continue to survive, they must find a new home. At present, scientists have discovered planets similar to the Earth in the universe, but because these planets are too far away from us, humans have no way to fly there. The editor believes that with the advancement of human science and technology in the future, we will definitely be able to create more powerful planets. aircraft. At that time, we will be able to fly out of the solar system and carry out interstellar migration. The editor hopes that this day will come as soon as possible. Is there anything you want to say about this?
