Home / Technologie / Terraforming of the red planet will not work at the moment

Terraforming of the red planet will not work at the moment

Image: NASA, ESA, the Hubble Heritage Team (STScI / AURA), J. Bell (ASU) and M. Wolff (Space Science Institute)

Scientists have calculated from satellite data Existing GHG resources do not make the Martian atmosphere friendly for life

After all, humans have been on the moon if you do not support the theory of lunar deception and want to understand the moon landings of Americans as a elaborate staging. But there are also followers of the flat world. Anyway, it could well be that in the next few years a manned mission lands on the Moon and may eventually build a settlement, but only suitable for people who like in the ISS in small, closed rooms without To endure claustrophobia [19659004] Attractive for life, life and work is the moon with its deserts that defy life. Therefore, Mars has always been happy to build as a destination for colonization. Not only should there have once been liquid water, but also an atmosphere with a lot of CO2, which is also stored in polar ice. To make Mars a second land, which is called terraforming, some should change on a large scale through geoengineering. The temperatures would have to increase, the atmosphere would be denser, the oxygen content would increase and the ice would melt.

The idea of ​​making Mars technically a living world or a new home for humans when it has to leave the earth is naive. little more than a dreamy science fiction, even though Mars seems to have the advantage over the earth, that we could simply destroy as a world of life for human beings, but barely able to rescue them, can be punished could accumulate, provided that Knowledge and resources were available. Even religions and philosophers have always dreamed of the creator of the world, who builds the world from scratch and on a secure basis step by step. The philosopher Otto Neurath had already answered this with a lack of reality and said: "There is no tabula rasa, as boatmen we are, we have to rebuild their ship in the open sea, without being able to dismantle it on a dock and rebuild it with its best components."

According to a study endorsed by NASA by Bruce Jakosky of the University of Colorado, Boulder, and Christopher Edwards of Northern Arizona University, it seems impossible to be less with the current state of the art, on Mars to build a necessary atmosphere for life. The results were published in Nature Astronomy. Previous attempts were made to calculate the possibility of terraforming, using new data from satellites such as Mars Reconnaissance Orbiter, Mars Odyssey and MAVEN (Mars Atmosphere and Volatile Evolution). This resulted in new knowledge about volatile elements such as CO2 and H20, their presence above and below the surface and the loss of gas from the atmosphere into space.

According to the two scientists, there is not enough CO2 to create enough heating To release the gas into the atmosphere: "In addition, most of the CO2 is not accessible and can not be easily released, which means that terraforming of Mars is not it's possible with current technology. "

According to its findings, the results of older people confirm that the atmosphere is too thin and too low in air pressure, barely 0.6 percent of the earth, so liquid water could not be maintained or freeze. But liquid water is crucial for life, at least for earthly life. To create a denser atmosphere, large amounts of greenhouse gases should be released into the atmosphere, which could then heat them. On Mars, there is only enough CO2 and water vapor as greenhouse gases to affect it. Even if there was probably once liquid surface water and the corresponding atmospheric pressure on Mars, the possibly adequate atmosphere for life escaped through solar winds and solar radiation into space.

For liquid water to remain on Mars, the air pressure is similar to that of the earth. Although there is enough ice to produce water vapor, the water does not cause significant heating. To stay in the atmosphere as steam, you would first have to warm up with CO2. It has also been proposed to use other greenhouse gases such as fluorocarbons. But these are short-lived and would require manufacturing processes so extensive that they did not include the two scientists in their research.

Image: NASA Goddard Space Flight Center

The CO2 in the polar ice caps could be released by applying enough dust. it is sprayed so that the gas escapes by heating. However, the total amount would only be enough to double the air pressure, which would then only equate to 1.2 percent of the land. What one wants to do on a large scale, by heating the soil of the Martian soil, it would also be possible to use CO2 in the atmosphere. But that would be enough for a maximum of 4 percent of the required air pressure.

And then, theoretically, you could still release CO2 from the rocks, which would also contribute at most to 5 percent. To release only surface stored CO2, all Mars would have to become a mine at a depth of 100 meters. It is true that carbonaceous rock could contain enough CO2 at the bottom of the crust to produce enough air pressure, but in what quantities it is present, it is not known. In addition, the launch would be a great technical challenge and would require temperatures above 300 degrees Celsius. It could also direct kites and asteroids to Mars to accelerate the process, but that would require thousands, which seems difficult to do.

In total, with the resources available on Mars, it would be possible to create an air pressure of only 7 Percentage of the terrestrial quantities. Scientists can not achieve terraforming, even if it were possible to obtain all the CO2 reserves in the atmosphere. At least for now, you can mark Terraforming of Mars. However, one could never imagine how such a gigantic undertaking could have been carried out for a long time by a humanity that does not even manage to live peacefully on earth for a short time and provide means of subsistence for all.
( Florian Rötzer )

Source link