The information on earth is ... urgent ... shorter.

The earth is one of the planets in the solar system, and ranks third in the order from near to far from the sun. It is the largest terrestrial planet in the solar system and the only planet that has been confirmed by modern science to have life. Scientists estimate that the age of the earth is about 4.57 billion years (4.57× 109). Shortly after the formation of the planet, it may be hit by a small celestial body, resulting in a natural satellite-the moon. Description of the Earth The Earth is often described as a miracle, created by God (see the entry on Gaia and Mother Earth). In Norse mythology, the god of the earth is Jiaode, who is Saul's mother and Anna's daughter. The earth is sometimes depicted as a solid spaceship. A life support system that needs to be maintained. Because the earth is so huge, in the past, it was difficult for humans to observe that its overall surface was oblate (the equator was slightly flat at the poles), which led to various beliefs about the plane earth. Before the invention of space flight, this belief was gradually discredited by observing the secondary effects of the shapes and spheres of other planets on the ground (for example, observing that distant ships always see the sails first and then the hull). Carl sagan was inspired by a photo of the earth taken by the navigator 1, who described the earth as a dim blue dot in the universe. In science fiction, the earth is often the capital or main management center of the imaginary galaxy/galaxy government (especially when the galaxy government is ruled by human beings). Often in science fiction works, the earth is the representative Federation of human rule, and occasionally countries, empires or autocratic rule are seen, such as Star Trek and Babylon 5. Nevertheless, in other sci-fi works, in the future, human beings will no longer remember the planet where their ancestors once lived (such as base series), or even if they do, they will leave because of excessive pollution (sand dunes (novel series)), or on the contrary, in the contemporary parallel world of modern earth, space immigrants with ultra-ancient civilization will leave and forget starcraft, and the earth's ecology will be destroyed once in the distant future, leaving a small number of people. In the series of Hitchhikers Guide to the Galaxy written by Douglas Adams, he described the earth as "basically harmless". In the PS2 game series Xenosaga, according to its story background, human beings have left the earth for a long time, and the earth has been given a name by human beings: "Lost Jerusalem".