In such a huge universe, with a diameter of more than 93 billion light-years, there are very few places suitable for life. According to the scope of human knowledge, only the earth can allow the existence of life.

Although humans have found a large number of environments that seem to be barely suitable, they all fall into the category of "big ones out of the woods". Whether it is Mars, Europa or Titan, there are all kinds of problems that cause life to suffer a fatal blow.

Therefore, if you want life to survive on these celestial bodies, it must be extreme life. If there is life that can withstand the low temperatures of these celestial bodies and resist radiation, then it is possible to survive on these planets. Then through evolution and development, a series of life forms adapted to that planet may be derived.

If there really is such a life, it should be a tardigrade.

The tardigrade is a creature we have introduced many times. It is the most tenacious creature discovered by scientists so far.

First of all, tardigrades are not afraid of low temperatures. Even in an environment of -200 degrees Celsius, it can still survive for several days, and even in a terrifying environment of -272 degrees Celsius, which is only about 1 degree Celsius higher than absolute zero, it can still survive for several minutes.

In addition, they can survive for several days in a hypoxic environment; they also have certain immunity to high-radiation environments. We have already introduced these, so we won’t go into details here. Even in an environment they can't bear, they can resort to the next best thing and enter a state of suspended animation, reducing their metabolic rate, similar to hibernation. When it returns to a suitable environment, it can be "resurrected".

These terrifying abilities have made tardigrades the most viable creatures in the world today, and they are also the first choice for humans to explore the ability of life on earth to survive in outer space.

Scientists have been studying this idea for a long time, and finally launched an experiment in Israel a few months ago. They sealed human DNA and some tardigrades that entered a state of suspended animation in epoxy resin (artificial amber) and sent them to the moon through their Genesis probe. Nova Spivak, co-founder of the Ark Mission Foundation, said that this is a backup of life on earth. He calls it a "lunar library", just like the doomsday seed bank in Norway.

Embarrassingly, the Genesis probe failed to land.

On February 21, 2019, the Genesis lunar probe developed by Space Israel was launched from the Falcon 9 launch vehicle of the American SpaceX company. After 7 weeks of flight, Came to the moon. However, during landing, due to the failure of the main engine, it was unable to brake and buffer, and the Genesis probe crashed on the lunar surface. The epoxy resin containing the tardigrades also fell on the lunar surface.

The crash of the Genesis probe is not the end of this project. Scientists still need to conduct follow-up analysis work. After analyzing the trajectory of the Genesis probe, they came to a somewhat gratifying result: the epoxy resin sealing the tardigrades was most likely not damaged, and might even be unscathed.

We don’t know whether these epoxy resins have been damaged. If a few pieces have been properly damaged and released tardigrades, then they will be the first ones on the moon. Sedentary earth creatures.

As we said before, the low temperature on the moon's surface cannot kill tardigrades. The radiation resistance of tardigrades can also help them gain more chances of survival on the lunar surface without an atmosphere. Although the temperature of the moon can sometimes reach over 100 degrees Celsius, the ability of tardigrades to withstand high temperatures is not inferior to its vitality in extremely cold weather, so it does not pose a threat to tardigrades.

Therefore, if the tardigrades are really released, there is a high probability that they will not be killed. To put it another way, even if the lunar environment makes the tardigrade unbearable, it can still enter a state of suspended animation. In the future, when humans have enough technology to bring them back to Earth, they can come back to life.

On the other hand, the harsh environment and high radiation in space will lead to more frequent genetic mutations. We know that genetic mutation is the most fundamental driving force for biological evolution, which can also promote the evolution of tardigrades. Although the direction of genetic mutation is uncertain, after being screened by the lunar environment, it is still very likely that new organisms that can adapt to the lunar environment will be naturally selected, and the fittest will survive to form new organisms.

In other words, tardigrades may become a kind of life seed and be sown on the moon.

If this happens, then humans will inadvertently create new life. And, in a sense, this life is lunar life.

At the same time, there is another possibility. The descendants of these tardigrades developed so well that they formed a large population and may even form an ecosystem on the moon. It is difficult to say whether new complex life or even intelligent life will be produced on the moon at that time. I hope that by that time, humans will be able to control the life there, otherwise, maybe we will be swallowed up by the life we ??have cultivated.