Is there a second earth in the universe? Titan is!

There is no answer! There may or may not be. No one can say that there must be, and no one can say that there must be no! The universe is beyond our imagination. There are so many stars that it is almost impossible to express them by numbers, let alone planets and satellites. The current technology of mankind, that is, the solar system, has not been thoroughly studied. How can we be sure that there is no second earth in the vast universe?

Titan is the most likely satellite of life in the solar system. Titan is the sixth satellite orbiting Saturn and the largest of all Saturn's satellites, also known as Titan. It is the second largest satellite in the solar system (the largest is Ganymede) and the only satellite with a strong atmosphere in the solar system. Scientists are very skeptical about the existence of life. Titan is bigger than Mercury and Pluto and has a thick atmosphere. Atmospheric pressure is greater than the surface of the earth. Its atmosphere is 98.4% nitrogen and the rest is methane. Methane is the basic unit of life, and the origin of life cannot be separated from methane. Titan is a magical satellite. It is the second planet in the solar system with liquid besides the Earth. It is very similar to the earth. Therefore, astronomers generally believe that there is life on Titan and even aliens similar to humans on Earth.

In fact, it is generally believed that there is life on Mars, which is an ideal place for human migration. This is because Mars is the fourth planet after the Earth. It is slightly smaller than the earth, farther away from the sun, and gets about the same amount of solar heat as the earth. But in fact, there is no trace of life on Mars, and Titan has a strong atmosphere. Due to the influence of the atmosphere, it is difficult for people to observe the true face of Titan for a long time. Scientists have found that Titan is very similar to the Earth 4.5 billion years ago. Titan has two other features that other planets in the solar system don't have. One is boiling organic compounds, and the other is dense protective atmosphere.

After Huygens landed on Titan, people really witnessed the beauty of Titan-stones of different sizes and a large number of cold objects scattered on the vast plain. Titan's sky is orange, which is very desirable. Does extraterrestrial life exist? The purpose of every probe launched on earth is to find extraterrestrial life. Why do you insist on doing this? It is precisely because of our home, the earth, that its life span is still 4.5 billion years! After 4.5 billion years, the life that is too far away is exhausted and becomes a huge red-orange star. Its light disappears and all the planets around it will be swallowed up by it, including the earth. At that time, only by emigrating to other planets could we avoid the fate of destruction. Therefore, people on earth are constantly exploring extraterrestrial civilization and looking for a livable home. Titan, far from the sun, is safer than Mars and is an ideal place for human migration.

Of course, human beings can "go" further and look for "the same kind" in outer space, but there are many difficulties. With present technology, we don't even fully understand the solar system, let alone the Milky Way. But what is certain is that there must be one or even N "Earths" in the vast universe, and there must be "aliens". We just don't know. Of course, they don't know us! Or they don't care about the earth.