Mars is the only known planet that can develop living conditions and then lose them
Ice cloud It could have been warm enough at high altitudes Mars According to a University of Chicago study published on Monday by the Proceedings of the National Academy of Sciences (PNAS), the project aims to develop rivers and lakes.
This study reveals a big mystery of Mars: how is Mars possible Red planet Received less than one-third of sunshine What we enjoy on earth today are rivers.
According to research led by Edwin Kite, a professor of geophysics at the University of Chicago, the answer may be found in the amount of ice on Mars.
If ice covers most of Mars, it will produce Surface moisture Studies believe that this will benefit low-altitude clouds, but these are not enough to overheat the planet.
However, if there is only a very small area of ice, such as at the poles or the top of a mountain, the air on the ground will become drier, so that higher altitude clouds tend to increase the planet’s temperature through the greenhouse effect.
The key is Onshore water It covers nearly three-quarters of the surface, and water flows quickly and unevenly between the ocean, atmosphere, and land, causing some areas to become deserts, such as the Sahara Desert, while other parts are submerged in water, such as the Amazon River.
According to the model of Kite and his team, there is much less water on the surface of Mars, so when water vapor rises to the surface, atmosphere It stayed there longer.
Kites and other robots NASA’s perseverance, Mars, which currently traverses the surface of Mars, can provide more details about it by analyzing its rocks to reconstruct the past atmospheric pressure on the red planet.
Researchers must understand how Mars Won and lost the atmosphere that helps us find others Habitable planet Because it is “the only known planet that can develop living conditions and then lose them”.