Lead
There is no shortage of water in the solar system, on the contrary, there are many planets that have water, the most famous of which is the "aqua" on Jupiter.
Water is not scarce in the vast universe, and its position in the universe is as precious as oil is on the earth.
There are many planets in the solar system that share the same valuable resources, including Uranus, Saturn, and Ganymede, whose surfaces are filled with gaseous matter that is actually the gaseous form of water.
Liquid water has also appeared many times in the solar system and has the potential to contain life.
So with so many planets in the solar system rich in water, why is life born on only one planet on Earth?
1. The form of existence of water in space.
Water is the most common substance in the solar system, and it is the highest in terms of the composition of matter on every planet in the solar system.
Moreover, water is the basic component of life, and almost all life depends on water for intracellular metabolism.
At the same time, water itself is also found in three different forms in space, one is liquid water, which is found on Earth, and has been detected in the past on Venus, an increasingly hot planet, and more recently, mercury has also been found to have water.
The most famous liquid water in space is Saturn's moon - Titan, which is also known as the most likely planet in space to support life.
In the clouds of the Titan atmosphere, there is abundant liquid methane and ethane, and there is also a large amount of liquid water, which may form raindrops in the atmosphere, and then rain from the sky to the ground, forming a water environment such as lakes, and the gas environment and liquid water on the surface of the Titan may give birth to a simple life.
In addition to liquid water in the solar system, there is also icy water, which exists far from the sun and is extremely cold.
There are two planets in the solar system, one is the most famous planet - Saturn, and the other is the mysterious "Pluto", these two planets have a large amount of icy water, and the extreme cold environment makes these icy water freeze into hard ice and cover the surface of the planet, so the ice on these two planets is actually the ice on the surface of the planet, and the inside of the ice is liquid water There is no doubt that these ice water may flow out after the interior of the planet is melted by high temperature, and then cooled to form ice, And there is a moon in the solar system that also has icy water, and this moon is Saturn's moon - Ganymede.
There are also a large number of water "traces" in the solar system, and these "traces" appear on planets far away from the sun, because the surface temperature of these planets is extremely low, so the existence of liquid water is impossible, but those large ice blocks are the "traces" of water that this planet has.
The so-called "traces" of these large ice cubes are actually when these ice cubes were formed at the beginning of the solar system, the high-temperature gas in the center of the sun attracted the rotating substance, and then under the rapid rotation of these materials and the rapid cooling of the high-temperature gas, the water was released outward, and then the ice cubes were formed in an extremely cold environment, and these ice cubes were gradually attracted by gravity to the orbit near the planet with the formation of the planet, and then melted into liquid water in the atmosphere that touched it, and then the rain fell to the ground to form a water environment. This is the "trace" of water in the solar system.
2. Planets with water.
There are many planets in the solar system with abundant water resources, the most famous of which is Jupiter, the planet with the most water resources.
People's exploration of Jupiter shows that Jupiter's surface is basically liquid, including a large amount of liquid water, and most of this water comes from the gaseous matter absorbed by Jupiter.
At the same time, Jupiter also has water resources from its moons and meteorites, so Jupiter has an abundance of water resources, but these water resources are located in Jupiter's atmosphere and are not accessible to humans, so these water resources have no practical value.
Jupiter's moons also have water resources, the most famous of which is Ganymede, which has a lot of ice, which is also the moon with the most ice in the solar system, and it is very likely that these ice blocks contain liquid water, just because Ganymede is too far away for humans to detect what is going on inside it.
There is another moon in the solar system that has a lot of ice, this moon is Neptune's moon - Guardian Uran, and the amount of ice on this moon is also very large, and it is also possible to contain liquid water.
However, the moons of Jupiter and Neptune have one thing in common: they both have the potential for life on them.
As we all know, the detection of extraterrestrial life is judged by detecting factors such as the composition of the gas in the atmosphere and the temperature of the surface, and the liquid water environment above them and the gas composition in the atmosphere can meet the conditions for the formation of life.
So there is a high probability that the moons of these two planets will host life.
And there are moons with a large amount of liquid water in the solar system, this satellite is Saturn's moon - Titan, although the liquid water on Titan has not been discovered by humans, but the interior of the satellite has been found to have a large amount of liquid water under human detection, but these liquid water has not flowed to the outside of the satellite, so people have no way to detect its existence, so whether the liquid water on Titan has life is still unknown, but people do not rule out the possibility of life on Titan.
At the same time, there are many moons in the solar system with a large amount of water resources, including a moon that may have life, this moon is Jupiter's moon - Europa, people's detection of this moon shows that there is liquid water on the surface of the moon, and the liquid water is still very large, it may be affected by Jupiter's gravity, the liquid inside is constantly tidal movement.
However, there is another fateful satellite, that is, Enceladus, although people have not detected the existence of liquid water on the surface of the satellite, but by detecting the gas composition of the satellite's atmosphere, and the liquid water contained in the atmosphere and other data, scientists speculate that the liquid water on Enceladus is very likely to form raindrops in the atmosphere, and then the raindrops fall from the sky to the ground, thus forming a liquid water environment, and the atmosphere and liquid water environment on Enceladus are also likely to give birth to life.
There are also two planets in the solar system that have a lot of water, these two planets are Venus and Earth, and the water resources of Venus and Earth are completely different from those on other planets.
Venus has a small amount of liquid water, but most of this liquid water comes from water vapor in Venus's atmosphere, while liquid water on Earth is an ocean water environment formed by raindrops and rainwater.
Therefore, the earth is the origin of the "living planet" in the universe, and even the origin of the "living galaxy", and people have also confirmed that there is life on the earth only in the solar system.
But Earth is not the only planet where life is present.
Because the Earth's moon also has "traces" of life on it, the American "Apollo" mission found many "traces" of life on the moon that may be on the moon.
3. There are other planets in the solar system that have water resources.
In addition to the planets and moons in the solar system with a lot of water resources, there are also planets that may have water resources, this planet is Mars, many people know that there are lakes on Mars, although the surface of these lakes are dry basins surrounded by rocks, but people can infer from the appearance of these lakes that there should be liquid water in these lakes, and the liquid water in the lakes also has the possibility of life.
There are also a large number of ice cubes on planets such as Saturn and Uranus, but humans cannot directly obtain its ice cubes, so no human can determine whether these ice cubes are formed by liquid water.
epilogue
Although water is the foundation of life, it is not the most important thing for life, but the environmental stability and security of the planet itself.
The most straightforward example is the earth, the earth has abundant water resources, but life on the earth also depends on the stability and security of the earth's environment, and these stability and security depend on the earth's magnetic field and the protection of the moon.
Water is a very important one for future space exploration and colonization, not only as a key to the existence of life, but also as a key to future space exploration and even colonization.
For the exploration of life in space and the use of space resources, it is also very important to observe not only the water resources, but also the environmental conditions and self-protection mechanisms of the planet itself.