Why do scientists think Enceladus, The search for life on planets other than Earth has been ongoing for a long time. In particular, scientists are actively searching for planets and moons with oceans.
How do we know that Enceladus has liquid water under its surface
Enceladus is a moon of Saturn. It has an ocean below the surface. Scientists believe that microorganisms can live there.
There are cracks here and there on the surface of this planet. Only by looking inside them can you see that there is an ocean underneath.
There is a problem in studying not only this planet but also most planets and moons with oceans.
That is, the spacecraft we send can only study the surface of a planet.
It is not easy to study the ocean. Even if you study the liquids in the ocean, you cannot know that life lives there.
The reason for this is that life, microorganisms, chemicals necessary for life production, and organic substances may be in the depths of the ocean. They can only be studied if they come to the surface.
There is a possibility that these may change their nature when they reach the surface after passing through various layers.
Therefore, it is not possible to determine whether there is life there by examining only the surface.
This is similar to how we cannot tell what kind of life lives under the sea by examining only the surface of the ocean on Earth.
In addition, the liquid in the Enceladus sub-planet has many layers. Just as oil and water are kept in a jar and remain separate layers, the liquid in this planet is also in layers.
Therefore, even if life lives in the layers at the bottom and in the depths, we cannot detect them.
The chance of them coming to the surface is also low. The current technologies are not sufficient to investigate whether life lives on such planets.
Scientists say that this question can only be answered by going and exploring under the sea.
