Wednesday, August 5, 2020

“To colonize Mars, you will need at least 110 people”

Must read

The Supreme Court of Poland recognizes the legitimacy of the presidential election / Article / LSM.lv

Representatives of the Supreme Court informed that more...

Migros gave the avocado a second bowl

Fight against food wasteThe product was developed by the US company Apeel Sciences and is designed to keep fruit fresh for longer.1 /...

Astronomers have discovered a giant in a hiding place in the universe

The Antarctic Wall is in a room called the “Avoidance Zone”. Seen from Earth, it is right behind the dust Center of the...

Send Men to Mars, all space agencies dreaming. But before colonizing the Red Planet, it will be necessary to carefully prepare the trip and the installation on the spot. Jean-Marc Salotti, a French researcher, member of the Planète Mars association, shares with Futura his thoughts on the number of people necessary to ensure the survival of such a colony.

A few months ago, the It’s in still hoped to send a whole first manned mission to Mars in 2033. But it is not yet a question of settling permanently on the Red Planet. Jean-Marc Salotti, a researcher from the Polytechnic Institute of Bordeaux and member of the association Planète Mars, however recently wondered how many men it would be necessary to embark on the adventure to ensure the survival of a colony on Mars. His answer: at least 110.

“I made the choice of certain starting hypotheses. But it’s complicated. There are many factors to consider. And finally, it is not so much the result obtained that counts, but the generic method developed to achieve it ”, explains Jean-Marc Salotti. A method at the heart of which we find the concept of “Sharing factor”.

“My model is based on estimates of working time. Colonization of a planet can only be successful if the available working time – the one that the settlers can provide – is greater than the working time required to ensure the survival of the colony “, explains the researcher. With the idea that the cooperation between the members of the colony makes it possible to share the burden generated by needs such as producing electricity, drinking water or General
Symbol: ON atomic number: 8 Electrons per energy level: 2.6 Atomic mass: 15.999 most stable isotopes … “data-image =” https://cdn.futura-sciences.com/buildsv6/images/midioriginal/4 /7/d/47dc2cafaf_59586_rust-screw.jpg “data-url =” https://news.google.com/sciences/definitions/chimie-oxygene-798/ “data-more =” Read more “>oxygen.

Sharing and sustainability at the heart of the Martian colony

Cooperation also allows a certain specialization of the members of the colony. A specialization that brings productivity gains. So “The more members there are in a colony, the more the working time required for its survival increases. But it is increasing less and less quickly as the population also increases. The curve is logarithmic “, remarks Jean-Marc Salotti for Futura. And when the colony reaches 110 people, the available working time finally becomes greater than the required working time.

“I also wanted to offer an original way of thinking about the problem of sustainable development », says the researcher. Project yourself on another planet to think differently. Learn to rely almost exclusively onenergy solar, to organize the recycling water, to effectively manage the quality ofair interior or to ensure the robustness of the equipment and to standardize the solutions. “This is part of my initial assumptions. “

The Martian colony that Jean-Marc Salotti imagines has, for example (re) learned to do withoutcomputers et de L’expression « robot…” data-image=”https://cdn.futura-sciences.com/buildsv6/images/midioriginal/5/a/3/5a3cb70e90_50036231_robonaut-003-1-01.jpg” data-url=”https://news.google.com/tech/definitions/robotique-robot-8433/” data-more=”Lire la suite”>robots. “Even if the gain in productivity is significant, to manufacture this kind of solution, you need enormous support. This does not seem feasible to me on Mars. In my opinion, it would be better to develop a maximum of clever and simple solutions. “ Durable solutions in the original sense of the term. Solutions … designed to last.

To colonize a planet, it would take 98 people

Using a mathematical model, two researchers examined the minimum number of passengers to board to ensure the survival of a population departing for Proxima Centauri b.

Article by Céline Deluzarche published on 23/06/2018

WhileElon Musk wants to send volunteers to Mars in 2024 to ” ensure the survival of humanity and thus promote its regeneration on the Structure of the globe … “data-image =” https://cdn.futura-sciences.com/buildsv6/images/midioriginal/8/4/f/84ff7edce5_123534_terre -apollo8.jpg “data-url =” https://news.google.com/planete/definitions/structure-terre-terre-4725/ “data-more =” Read more “>Terre in case of third world war “, Researchers from the Strasbourg Astronomical Observatory have looked to another destination: Proxima Centauri b, the question of exoplanets is very old in astronomy. Their existence is for the first time indirectly attested in … “data-image =” https://cdn.futura-sciences.com/buildsv6/images/midioriginal/c/b/b/cbb070c40f_50034423_exoplanete-nasa-esa -g-bacon-01.jpg “data-url =” https://news.google.com/sciences/definitions/astronomie-exoplanete-2576/ “data-more =” Read more “>exoplanet potentially habitable closest to Earth. In their study, published on the scientific platform arXiv, Frédéric Marin and Camille Beluffi calculated the number of people necessary for such an expedition to ensure the survival of a colony in a sustainable way, and concluded that 98 individuals would be enough.

A figure that owes nothing to chance. The researchers used a probabilistic code called Heritage, taking into account a whole series of parameters, such as the number of men and women, their age, their life expectancy, the risk of inbreeding, etc. Even the darkest scenarios were considered, such as the case of a epidemic of Transmission of the plague
The plague is above all a zoonosis affecting small animals and their fleas. The bacillus, Yersinia pestis, can also infect humans. It is transmitted from animals to humans … “data-image =” https://cdn.futura-sciences.com/buildsv6/images/midioriginal/f/5/3/f53a05cf5a_50034661_peste-medecin-cc- 02.jpg “data-url =” https://news.google.com/sante/definitions/medecine-peste-4225/ “data-more =” Read more “>over spreading among passengers or accidental destruction of part of the ship.

A journey of 6,300 years over several generations

First criterion to take into account: duration travel. Proxima Centauri b is thus located at 4.22 light years from Earth, or 4 x 1013 kilometers. With a shuttle type Apollo 11, it would therefore take 114,000 years to reach its destination. But usingother types of technology like gravitational acceleration, like mission Parker Solar Probe, it would be possible to reach 724,205 km / h, or 200 km / s, according to the researchers. The journey would then last only 6,300 years! It is therefore this The speed having a direction and an intensity is represented by a vector, the speed vector. Relative speed is the speed of a body in relation to another or in relation to a benchmark. “Data-image =” https://cdn.futura-sciences.com/buildsv6/images/midioriginal/3/1/ 9 / 319daf63f4_77541_leibniz-dp.jpg “data-url =” https://news.google.com/sciences/definitions/physique-vitesse-324/ “data-more =” Read the definition “>speed which was taken as a starting point.

Based on arbitrary departure parameters, the mathematical model recalculates the number of passengers remaining each year and compares this figure with the minimum threshold required to ensure the survival of the crew. Finally, the researchers defined a probability probability curve based on the number of people leaving, and arrived at the optimal figure of 98 (49 men and 49 women), taking into account the risks of random incidents.

A purely mathematical exercise that says nothing about psychology

Obviously all of this remains very theoretical. A large number of unknowns have not been studied, such as water and food or the role of each passenger. ” There are of course other questions inherent in such a trip: what would be the political regime on board the ship? In what state of mind would the intermediate generations be, whose sole purpose would be to reproduce themselves to ensure the success of the mission? For the moment, the psychological and sociological implications cannot be mathematized “, Explains Frédéric Marin to the site The Evening Edition from Ouest France. Another study published in Astronautic Act, in 2014, had also arrived at a very different number concerning the sustainability of a population during interstellar travel. According to this study, it is not 98 people but … 40,000 who would be necessary to ensure the survival of a colony.

In short, the expedition is not ready to see the light of day, especially since no one really knows if Proxima Centauri b is really habitable. Subject to significant radiation, it is possible that its atmosphere and its oceans have evaporated and its surface has been fully sterilized. It would be really stupid for the brave descendants of the Earth pioneers.

This will also interest you

Mars One: a trip to colonize Mars, is it credible? Posing Men on Mars is undoubtedly the next big step in the space conquest. If, for the moment, Nasa remains cautious on the subject, other organizations like Mars One imagine sending Men to the Red Planet from 2027. Is the project credible? The Cnes offers a video response.

Interested in what you just read?

.

More articles

LEAVE A REPLY

Please enter your comment!
Please enter your name here

This site uses Akismet to reduce spam. Learn how your comment data is processed.

Latest article

The Supreme Court of Poland recognizes the legitimacy of the presidential election / Article / LSM.lv

Representatives of the Supreme Court informed that more...

Migros gave the avocado a second bowl

Fight against food wasteThe product was developed by the US company Apeel Sciences and is designed to keep fruit fresh for longer.1 /...

Astronomers have discovered a giant in a hiding place in the universe

The Antarctic Wall is in a room called the “Avoidance Zone”. Seen from Earth, it is right behind the dust Center of the...

Cyril Hanouna spends his vacation with stars: fans tackle him

© Instagram @cyrilhanouna On his latest Instagram post, Cyril Hanouna poses on vacation surrounded by stars. They are all five...