The atmosphere is a gaseous shell held around a celestial body by gravity. The gaseous medium rotates with it as a whole. On earth, all of humanity’s life depends on the atmosphere. Without it, there would be no living thing. Nikolay Demin, a lecturer at the Gorky Park Astronomical Observatory, told Rostov.ru about what would happen to a planet without a gaseous shell.
The specialist noted that the atmosphere is of great importance to the earth. It dissipates solar heat and does not allow the planet’s surface to become very hot during the day. And at night, on the contrary, it protects against rapid cooling and keeps the heat on the surface. Without an atmosphere, sudden temperature changes will begin. During the day the surface will be heated up to about +150 degrees and at night it will cool down to -180.
Under such conditions, all the water will evaporate, the oceans will literally dry up. At the same time, the erosion processes will stop, because there will never be any more wind or precipitation, – shared the Rostov researcher. – Soil chemistry will also change: organic compounds are broken down and soils become barren.
In the photo: Meteor – the process of combustion of meteoroids in the atmosphere.
Along with the atmosphere, the sound in its usual sense will also disappear. In fact, it is spreading on the earth in the form of waves in the air. But in outer space (where a planet without an atmosphere will be) there is no sound. There are only electromagnetic and radio waves, X-rays and gamma radiation. They can be transformed into sound waves of such a magnitude as the human ear perceives.
Due to the disappearance of the atmosphere, there will be no meteors. Particles from the comet plume that the planet passes into orbit will begin to land in their full mass.
– The gas shell protects the earth from falling celestial bodies: they burn up in it, and a significant part of them either do not reach the surface or become much smaller. Without a gaseous environment, beautiful “star falls” will turn into a parade of cobblestones that will leave craters behind, “added Nikolai Demin.” This happens, for example, on Mercury and the Moon. Although the latter officially has an atmosphere, its density so low that it has almost no effect.
By the way, the denser the gas shell, the faster meteoroids burn. For example, the density of the Venusian atmosphere is 93 times that of Earth. Therefore, celestial bodies in it burn out faster and fly much shorter distances.
The air will also disappear. Oxygen makes up about 21% of the entire gaseous environment, which means that there is nothing to breathe without it. The earth will turn into a dead desert like the moon. Only gravity remains the same.
In the picture: The moon, as the earth will look without atmosphere.
However, there is nothing to fear. The atmosphere disappears so slowly that it would take billions of years.
“The atmosphere” naturally leaks slowly into space under the influence of the solar wind, but this process is very slow, “the Rostov researcher concluded. – In addition, there are filling processes. So, carbon dioxide is emitted by volcanoes, and green plants emit oxygen from it.
In addition, humanity will disappear as a species much sooner than the loss of the gaseous envelope becomes significant. Biological species do not live that long. Due to natural mutations and habitat changes, they die out or change over millions of years. Other species of plants and animals that we know of will also disappear or change beyond recognition at that time.