Pourquoi La Colonisation Spatiale est une Très Mauvaise Idée

Sympa

Parlons de pourquoi la colonisation de l'espace pourrait ne pas être aussi géniale qu'elle le semble. Tout d'abord, l'espace est un environnement dur et impitoyable – pensez à l'extrême radiation, l'absence d'air, et les températures glaciales. Ensuite, il y a le coût et la logistique fous de transporter des personnes et des fournitures vers d'autres planètes ; ce n'est pas comme si nous pouvions simplement monter dans un bus ! De plus, les voyages spatiaux à long terme peuvent sérieusement perturber votre corps, de la perte de muscles à la détérioration des os. Enfin, il y a le dilemme éthique de potentiellement perturber des écosystèmes existants ou des formes de vie là-bas.  Animation créée par Sympa. ---------------------------------------------------------------------------------------- Musique par Epidemic Sound https://www.epidemicsound.com   Pour ne rien perdre de Sympa, abonnez-vous!: https://goo.gl/6E4Xna​ ---------------------------------------------------------------------------------------- Nos réseaux sociaux : Facebook: https://www.facebook.com/sympasympacom/ Instagram: https://www.instagram.com/sympa.officiel/  Stock de fichiers (photos, vidéos et autres): https://www.depositphotos.com https://www.shutterstock.com https://www.eastnews.ru ----------------------------------------------------------------------------------------  Si tu en veux encore plus, fais un tour ici:  http://sympa-sympa.com

Transcript

00:00 In the movies, we often see humans living on other planets, like Mars.

00:05 The colonization of our solar system and beyond has long been a dream for humanity.

00:11 The idea that humans travel in space dates back to at least 1610.

00:15 A German astronomer named Johannes Kepler had written to the Italian astronomer Galileo.

00:20 Kepler claimed that we could build ships to travel in space and even draw star maps.

00:27 Our interest in the cosmos has intensified during the famous space race.

00:31 NASA was created in the 1950s.

00:34 It has accomplished many impressive feats,

00:37 such as sending space stations, astromobiles to Mars and exploring other planets.

00:42 All this has made space travel more concrete.

00:45 Today, we have evolved to the point where we can seriously discuss the possibility of space tourism.

00:52 We are already sending ordinary people into space, and, of course, very, very rich people.

00:59 But many believe that, in a few decades, space tourism will become widespread.

01:05 We will be able to travel to Earth's orbit and return, as if it were a tourist circuit.

01:11 Space ships will replace airplanes, and it will only take two hours to go from Australia to England.

01:17 And finally, we will start traveling to other planets in our solar system.

01:21 Some scientists estimate that we could have colonies on the Moon or on Mars by the year 2060.

01:28 In the future, we could not only colonize Mars, but also some moons like ours, Ceres, Titan and others.

01:35 But the question arises, why do we want to live on other planets so much?

01:40 It's a surprising question, isn't it?

01:42 But the answer may seem obvious at first glance.

01:45 Humans want to know more about space and other planets.

01:49 This curiosity is what led us to great discoveries, such as the exploration of Antarctica and our trips to the Moon.

01:57 Then, there is the question of safety.

02:00 Humans are extremely concerned about their survival.

02:03 And colonizing space could protect us from disasters that could destroy all life on Earth.

02:09 By spreading in space, we improve our chances of survival and meet this goal.

02:14 In addition, with the overpopulation of Earth, colonizing other planets could relieve the pressure on our home planet.

02:21 The colonization of a planet involves settling there and exploiting its resources.

02:26 And there is an abundance of resources in space.

02:29 Our solar system is full of useful elements, such as the Titan.

02:33 Space colonization could provide us with clean energy, access to new materials, new technologies and much more.

02:41 The more we colonize space and learn about it, the more we can benefit from its advantages for humanity.

02:48 This means more technology, more exploration, more innovation, and so on.

02:54 History also shows us that explorers are much less likely to compete.

03:00 "To extend and explore," say scientists, "occupies us with fascinating discoveries, generating growth and research."

03:08 The more we explore, the less we are overwhelmed by our terrestrial problems.

03:12 But on the other hand, not everyone is interested in space adventure.

03:16 And maybe colonization of space is not such a good idea as it seems.

03:20 First of all, is it even possible?

03:23 Some say that living in space is simply unrealistic.

03:27 You may have heard of terraforming.

03:30 Terraforming essentially means "changing and improving a planet according to our convenience,"

03:36 as in the card reader of a video game.

03:39 It sounds great, in theory.

03:42 But in reality, terraforming Mars, for example, could take hundreds of years and cost billions of dollars, according to experts.

03:50 Colonizing our moon could cost 104 billion dollars, a pharaonic amount.

03:55 That's seven times the annual budget of NASA.

03:58 And that's not to mention the costs of the Earth.

04:00 But here's the most important question.

04:02 Is it really that great to live in space?

04:06 It's not a welcoming environment at all.

04:08 Most celestial bodies are exposed to intense radiation due to solar winds.

04:13 Imagine a wind so powerful that it can sweep away the planets from their atmospheres.

04:18 Our sun represents a real danger to each planet in the system, including our own Earth.

04:25 The stars are incredibly powerful.

04:28 They constantly emit charged particles that can move at phenomenal speeds, reaching up to 8 million kilometers per hour.

04:36 These particles' bursts can make a planet entirely sterile.

04:40 Poof! No more life.

04:42 The water on the planet would evaporate and then freeze.

04:45 The temperature would drop to become extremely cold.

04:48 And even the sky in broad daylight would be as dark as night.

04:52 Fortunately for us, the Earth has an incredible shield called the magnetosphere.

04:57 It protects us from solar winds.

04:59 Scientists study these winds to help us find other habitable planets.

05:03 By examining the properties of the stars, their gravity and their magnetic field,

05:08 we can determine whether their planets can really shelter life.

05:12 It is extremely difficult to find a planet that is not constantly bombarded by radiation.

05:17 To avoid this, a planet must have a very thick atmosphere, like that of the Earth.

05:23 But unfortunately, we have not yet discovered such planets.

05:27 This is why living in space would pose considerable health problems.

05:31 Extreme temperatures and radiation are just the beginning.

05:35 What about muscle loss, vision problems and other complications?

05:39 Humans are far too vulnerable for this.

05:42 Robots, on the other hand, are better suited to space exploration

05:46 because of their ability to resist these hostile conditions.

05:50 Take Mars, for example. The red planet is icy and very inhospitable.

05:55 In fact, the Earth could face almost any major disaster

05:59 and would nevertheless remain more habitable than Mars.

06:02 It is a desert with very little water, far from the idea of a "peaceful harbor".

06:06 Let's imagine that the Earth's air is too polluted.

06:09 Mars would still not be better.

06:11 Its atmosphere is extremely thin and composed of 96% carbon dioxide.

06:17 Compared to this, the Earth's air is much more breathable.

06:20 Even if a huge asteroid had just crashed on Earth,

06:23 we would still be better off here than on any other planet.

06:27 Take a massive asteroid like the one that exterminated the dinosaurs.

06:31 This event was truly catastrophic, plunging the Earth into unnamed chaos.

06:36 It created a huge crater, that of Chik-Sulub.

06:41 The impact caused gigantic fires, tsunamis

06:45 and a huge amount of dust and debris was propelled into the atmosphere.

06:50 It hid the sunlight for a long time.

06:55 Can you imagine what happens when there is no sunlight for a long time?

07:00 Everything becomes dark and icy.

07:02 This darkness and this cold have seriously affected plants and animals.

07:07 Without sunlight, plants could not do photosynthesis,

07:12 depriving many animals of their food source.

07:16 And this is where the consequences are short-term.

07:20 Of course, many species have disappeared as a result.

07:24 But despite all this, 25% of species have managed to survive in one way or another.

07:30 If the same asteroid had hit Mars, there would not be much left.

07:34 The planet does not have enough resources like water and air to support life as the Earth does.

07:40 This environment would not be more livable.

07:44 In fact, the Earth has survived not one, but five mass extinctions.

07:49 And despite this, life has always managed to thrive on our planet.

07:53 As you can see, it is almost impossible to make the Earth completely uninhabitable.

07:58 Our planet will always remain the most habitable place compared to any other place in our solar system.

08:04 Unless we do something extremely irresponsible.

08:09 That's why we have to protect it.

08:12 We come to the famous argument that the Earth is in trouble.

08:17 If our planet is threatened, why not focus on its recovery instead of looking for equity?

08:23 Critics argue that if we cannot even take care of the Earth,

08:27 we should not extend our problems to other celestial objects.

08:31 Are we really able to colonize other worlds responsibly if we can't even manage ours?

08:37 Moreover, there is still so much to explore on our own planet.

08:41 Humans have not even populated Antarctica or the seabed.

08:45 Are we sure we are ready for even more extreme worlds?

08:49 So, even if the Earth is in trouble, we should not give up.

08:54 We have to work hard to create safe places.

08:57 It's a big challenge, sure, but it's much more conceivable and less expensive than establishing space colonies.

09:04 Of course, the idea that humans live in space and travel to other planets is very exciting,

09:10 but we should never forget our home.

09:13 And we should remember that life is not science fiction.

09:16 We should use our technology rationally and focus on improving the quality of life on Earth.

09:23 And you, what do you think?

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