Cryo people have the same structure as the volcanoes of the earth, but instead of molten rock they expel ammonia, methane or water that has remained frozen below the surface.
Scientists believe that volcanic activity has been present for much of the history of Ceres, the smallest of the dwarf planets in the solar system, located in the asteroid belt between the orbits of Mars and Jupiter.
These cryo-people have not had a decisive influence on the formation of the surface of the planet, such as on earth, until now it was difficult to find their traces.
In 2015, NASA & # 39; s Dawn probe, orbiting Ceres, discovered a dome shaped mountain called Mount Ahuna, which was later identified as a cryovolcano.
Researchers believe that these types of formations fade with the passage of time on the surface of the dwarf planet, so that other similar volcanoes in Ceres are not directly observed.
Michael Sori and his group from the University of Arizona (United States) developed a model to understand the process of disappearance of these hills with which they could identify 22 areas on the surface of the dwarf planet, with a total diameter of about 945 kilometers. which probably was a cryovolcano.
Sori's estimates suggest that in the last billion years a volcano of ice has appeared in Ceres about every 50 million years.
The authors of the work published in Nature Astronomy also estimate that the volume of frozen material that has been driven to the surface of Ceres is between one hundred and one hundred thousand times smaller than the amount of molten rock on Earth, the Moon, Venus or Mars.