Mars

NASA is looking for four people who want to live a year on Mars without leaving Earth

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Space travel can leave no room for improvisation. Especially if the destination is a place as inhospitable and unexplored as Mars. Or even the Moon. Therefore, before the first astronauts set foot on the red planet and a new batch of humans walk on our satellite, NASA has decided to carry out a dress rehearsal here on Earth. Of course, it will not be done with astronauts, but with a group of volunteers willing to spend a year in a simulated environment of both the confinement conditions of the trip and the subsistence with limited resources that will mean staying at a base in either of these two places. The mission is expected to begin in 2027, no earlier than August, so the search for volunteers is still underway. Two missions in one. The mission, named by NASA as Moon and Mars Exploration Analogis a mix of two other previous missions: HERA and CHAPEA. Both consist of the use of facilities that simulate the extreme conditions of a trip to Mars or the Moon. CHAPEA’s facilities are larger (158 m2), as they simulate what the installed base would be in either of these two locations. HERA, on the other hand, consists of a smaller environment (60 m2), which simulates the confinement conditions of space travel. Therefore, what will be done is to dock the vehicle, based on HERA, to a larger, but isolated environment, in which there is everything from private accommodation for the crew to a common work space, including a recreation room, cultivation area, medical room, food preparation area, airlock and two bathrooms. They are not astronauts, but almost. NASA has announced that it is looking for volunteers, possibly because its astronauts are busy with other tasks. However, not just anyone can apply. To start, they must be US citizens or green card holders, between 30 and 55 years old, with a good command of English and a height that does not exceed 1.88 meters. On the other hand, they must have a degree in engineering, biological sciences, physical sciences or mathematics. Basically, just like astronauts. In fact, it is preferable that they have these qualifications at an advanced level. Finally, they should not have special dietary needsnor require help to sleep. Furthermore, in relation to sleep, they should not be sleepwalkers either. Of course, added to all this is that they will have to pass a series of tests, both physical and psychological. Come on, they’re not astronauts, but almost. Training for a fake trip to Mars. The four selected volunteers will have a pre- and post-mission phase dedicated to data collection. Additionally, before embarking on this year-long simulation, they will have to train and prepare for what will come next. In total, all this will last two months. All simulations. For one year, these temporary astronauts will live and work in isolation and confinement while simulating both interplanetary travel and operations on the planetary surface, including spacewalk simulations. It is expected that the results will be useful for missions as imminent as those of the Artemis programbut also for future even more exotic trips, including the long-awaited Martian colonization. Image | Magnificent | POT In Xataka | We knew there was water on the Moon, but not why some craters were empty. Finally we have the answer

What doesn’t kill you makes you stronger. Especially if you are a bacteria on Mars

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Today, astronauts They usually quarantine before traveling to space to ensure that they do not carry with them any unwanted pathogenic microorganisms. This is for two reasons. On the one hand, it prevents them from getting sick at such a distance from a doctor who can treat them. On the other hand, we do not know how these microorganisms may behave beyond our planet, so it is better not to carry any. The problem is that, when lunar and Martian colonizations arrive, it will not be so easy to make this type of controls. Sooner or later it is likely that some pathogenic bacteria will reach there, so it is important to know what we should expect. Several studies have been done in this regard, but one of the most interesting and recent is the doctoral thesis of astrobiologist Tommaso Zaccaria, from Radboud University. In this thesisstudies how four species of bacteria would behave on Mars. Thus, he discovers that not only could they survive. They could also become much more dangerous to humans. Four pathogenic bacteria. The study was carried out with four species of non-extremophilic pathogenic bacteria. That is, disease-causing bacteria that are not naturally prepared to resist extreme conditions. Those chosen were Klebsiella pneumoniae, Serratia marcescens, Burkholderia cepacia and Pseudomonas aeruginosa. First, Zaccaria exposed them to a simulated Martian environment, with conditions such as very low pressure, desiccation, very high ultraviolet radiation and high concentrations of perchlorates. There were two that held up especially well: Klebsiella pneumoniae and Serratia marcescens. For this reason, they were chosen for a second phase of the research, in which they were exposed to human immune cells. The results were quite worrying. Martian superbacteria. When exposed to bacteria that had remained in Martian conditions, it was seen that the immune cells lost their ability to produce cytokines, proteins that are part of the defensive response. They also didn’t produce as many reactive oxygen species, which are also produced as a result of an inflammatory immune reaction. In short, it seems that Martianized bacteria become much more elusive for the human immune system. The reasons. Zaccaria thinks that, in part, the bacteria’s resistance is due to the influence of the martian regolith. And it has nooks and crannies where water can accumulate that would help with desiccation. In addition, it protects them against ultraviolet radiation. At the same time, they themselves develop resistance mechanisms, which help them defend themselves against Martian inclemencies, but also against the human immune system. They become superbugs. The regolith doesn’t help at all. We have already seen that the regolith becomes a protector of bacteria. But the thing doesn’t stop there. In his study, Zaccaria exposed both live mice and human epithelial cells to simulated lunar and Martian regolith. Thus, it was seen that regolith damages the epithelial cells that normally cover the airways and, in addition, enhances inflammation and the activation of genes for mucus formation and pulmonary fibrosis. Let us remember that one of the bacteria that survives Martian conditions is causing pneumonia. That the regolith sensitizes the lungs does not help at all. Although it should be noted that the lunar regolith turned out to be worse than the Martian one. The effects are not comparable. ‘Klebsiella pneumoniae’ Heroin yeasts. Finally, this scientist has verified how Martian conditions affect eukaryotic microorganisms. Bacteria are prokaryotes because they do not have a delimited nucleus. Yeasts, for their part, are eukaryotic microorganisms. One of the yeasts tested in the study, Rhodotorula frigidalcoholisshowed great resistance to Martian conditions. It is capable of stopping its cell cycle and repairing DNA, so that dangerous changes do not continue to spread from one cell to another. Learning more about this mechanism could help us protect ourselves in our future as space colonizers. After all, our cells are eukaryotic. This doesn’t end here. Zaccaria wants to study some bacterial defense mechanisms, such as the formation of biofilms or the synthesis of certain pigments. In addition, he hopes to be able to analyze how Martian conditions affect bacteria that are beneficial, such as those of the intestinal microbiota. With all this, we will be able to have a much more precise photograph to prevent the possible evils of future colonizers. When quarantines are not enough, it will be better to have a well-researched action plan. Image | NASA | Ajay Kumar Chaurasiya In Xataka | Chernobyl was filled with mushrooms after the nuclear accident. Thanks to them we discovered a “new form of photosynthesis”

We have found the kryptonite of the irreducible tardigrades. It’s on the ground of Mars

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There are few vermin as important for space exploration as tardigrades. In fact, tardigrades and sepiolids They usually have a reserved seat in NASA space missions for a reason. If they are so essential for science, it is because They are almost indestructibleso they serve as a thermometer to analyze the potential development and survival of living beings in extreme conditions. We have bad news: they survive the vacuum of space, radiation and extreme desiccation, but they can’t stand the soil of Mars. The kryptonite of tardigrades. A research team put to the test to these very tough microscopic animals in the Martian regolith. The objective is twofold: they could serve to prepare arable soils on Mars and to better understand the risk of a potential escape of tardigrades from a possible human phase. Bad news: the Martian soil turned out to be toxic. After two days of exposure to the artificial soil designed on Earth to simulate the characteristics of Mars MGS-1, not a single specimen of Hypsibius exemplaris was left alive. Ramazzottius S778 had better luck: some individuals survived. The research team observed an essential fact: by washing the soil simulant, the damage was greatly reduced. What does this mean? That the main suspect is a soluble chemical compound specific to Martian soil: perchlorates, oxidizing salts very abundant on Mars, such as detected the Phoenix probe almost two decades ago and confirmed the Curiosity rover. Images of tardigrade samples with the simulant and exposure time in days. Corien Bakermans, Matteo Vecchi and Gillian Pearce Why is it important. Because if we eventually want to send humans there and establish a base, we will first have to be able to grow food there and for that the Martian soil must be productive and capable of supporting terrestrial life. This study shows that as it is, that soil is toxic to even the most hardy animals on Earth. On the other hand, these results have direct consequences for the protection of the planets: if an organism escapes from a Martian habitat, we must know if it could survive in the Mars environment by contaminating it. Context. Tardigrades have been the reference model for studying Extremophiles for decades. Thus, the TARDIS experiment in 2007 demonstrated that survive direct exposure to outer space and ultraviolet and ionizing radiation in a state of cryptobiosis (a state of extreme latency in critical environmental conditions). But it is one thing to resist in “off” mode and another in an active state, which is precisely what is of interest for eventual biological colonization. This experiment is precisely one of the first to test whether they can withstand these most vulnerable conditions and was carried out on simulated soils of Gale Crater, the area explored by the Curiosity rover. In detail. To better understand the survival of tardigrades on Mars, the research team exposed populations of these animals only to the Martian simulants MGS-1 and OUCM-1, without including other conditions typical of the planet such as radiation, vacuum or extreme temperatures. For the comparison, they used terrestrial sand as a control and monitored how many individuals remained active throughout the study time (four days). Statistical analysis determined that survival depended on both soil type, species, and exposure time. Yes, but. The results provide a good basis of information, but as the team explains, more testing is needed to fully understand the potential habitability and dangers of the Martian regolith. The next logical step will be to progressively incorporate the other environmental variables of Mars (radiation, pressure, temperature) in future experiments. This is, therefore, a study that is still very premature to know the ideal conditions for survival. In Xataka | We already know what the true superpower of tardigrades is. And there is its extreme resistance In Xataka | Why NASA keeps sending tardigrades and sepiolids into space Cover | Planet Volumes

The robot with which they want to explore the tunnels of Mars is a ball bug stuffed with dandelion drones

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The human being has been sending rovers to Mars for 30 years. We know a lot about its surface, but there are still many unexplored regions. A good example is its tunnels. The red planet has the largest known network of tunnels in the solar system, but there has been no vehicle capable of entering them and exploring them from within. Therefore, a team of scientists from the New Mexico Institute of Mining and Technology takes several years working on a most original solution: sending a ball bug robot, filled with dandelion drones, to the caves. It sounds very strange, but it makes sense. Biomimetics to enter the tunnels. Professor Mostafa Hassanalian, from New Mexico Tech, has been working on this project for several years, but recently the topic has returned to the networks after he gave statements to space. In them he tells them, in broad strokes, the objective of his research. This is based on biomimetics. That is, in the development of technologies inspired by nature. Specifically, it aims to develop two types of drones: one inspired by scale insects and another that works like dandelion plants. The mealybug, known colloquially as a ball bug, can enter small places and protect its own body by shrinking into a ball. In this case it protects its interior, because it has hidden a lot of tiny robots that spread through the air like dandelion seeds. The problem. Mars is full of tunnels of volcanic origin. Some have been found extending up to 1,200 kilometers, with lava tubes more than 250 meters in diameter. They are not exactly small tunnels. The rovers currently on Mars, such as Curiosity either Perseverancethey do not have the ability to enter these tunnels. Therefore, if there is something interesting, we will not be able to know it until humans travel to the red planet. If what is there is dangerous, it is better to see it before entering. Methods are needed to see inside those tunnels. The solution. Hassanalian’s team has come up with two types of robots. On the one hand, the one that imitates the cochineal is a sphere that can be inserted through a hole dug in the ceiling of the tunnels. Once inside these, the ball opens, like a cochineal that stops turning into a ball, and releases its contents: thousands of small, very light drones, which can travel kilometers away thanks to the wind. Limitations overcome. These types of devices would encounter several obstacles, for which Hassanalian has already thought of a solution. The first would be that we have no idea if there will be enough wind inside the tunnels. We know that Mars can be very windy, reaching 100 kilometers per hour. However, the tunnels could be guarded. Therefore, this scientist plans to incorporate a fan in the main robot to help propel the mini dandelion drones. In addition, the holes that would be made in the ceiling to introduce the robot would help propel the little seeds. On the other hand, sunlight cannot access the interior of the tunnels, so they could not be powered by solar energy. This is solved using piezoelectricity. That is to say, materials that generate electricity when subjected to mechanical pressure. Multitude of sensors. The drones will be loaded with humidity and temperature sensors that will allow the internal conditions of the tunnels to be analyzed. In addition, they would also help map the conduits and make a plan of the Martian tunnel network. All of this would be sent to researchers via radio signals. At the moment, these two types of robots have not been built or tested, but the idea is very promising. With enough funding to make it happen, we would have a very ingenious solution to look into those blind spots on the red planet. And all thanks to an animal and a plant from our own planet. Image | MagnificentDave Huth | Nex México Tech. In Xataka | Elon Musk says it will take 1,000 Starships and 20 years to build the first sustainable city on Mars

NASA has looked at Torrevieja from space and has seen a huge mass of pink water essential to finding life on Mars

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From space everything looks different. In fact, distance allows us to distinguish strange shapes, such as the Great Dam of Zimbabwe or the eye of the saharabut also colors that go more unnoticed at ground level. Thus, on June 7, 2021, an Expedition 65 astronaut aboard the International Space Station pointed his camera toward the southeast of Spain and took a photograph that looks like a watercolor: Mediterranean blue, a muted green and an intense pink reminiscent of quartz. The color palette is finished off by the white reflection of the sun. The three colors correspond to bodies of water a few kilometers from each other, in Alicante: the Mediterranean, and the saline lagoons of La Mata and Torrevieja. What seems like an aesthetic coincidence is actually chemistry visible from orbit. Each tone reveals something: the degree of salinity, which microorganisms dominate the water, and in what fragile balance they coexist. The lagoons of La Mata and Torrevieja. The Torrevieja lagoon has been used as a salt mine since the 13th century and today are the largest salt producer in Europe, with an average of 650,000 tons per year, a figure that varies depending on solar radiation, wind and precipitation. It does not function as a natural lagoon, but as an industrial system where water moves according to production needs. The La Mata lagoon acts as a prior concentration chamber: receive sea ​​water through artificial channels and runoff from intermittent streams of the Sierra de San Miguel de Salinas. From there, the water is pumped to the Torrevieja salt mine, where brine from the Pinoso salt diapir through a 55 kilometer pipeline. The result is that the concentration of salt in the Torrevieja lagoon can overcome 260 grams of salt per liter, much more than the 38.5 g/liter Mediterranean that bathes its coast. Two adjacent lagoons but with completely different chemical worlds. Why do they have such different colors?. Each time water of different composition is pumped to produce salt, the chemistry of the system is altered, which determines What organisms can live and in what quantity. Two lagoons a kilometer apart, two different microbial communities and two opposite colors. The pink color of the Torrevieja lagoon is produced by microorganisms. More specifically, in conditions of high salinity and intense solar radiation, the microalgae Dunaliella salina accumulates β-carotene as protection against light. The halophilic archaea that share the lake reinforce that tone: they have red pigments distributed throughout their cell membrane, which makes them visually more decisive in the final color of the water. In La Mata, the lower concentration of salt favors a different microbiota where chlorophyll predominates over carotenoids: that explains the green color. Context. The salinity gradient between both lagoons goes beyond chemistry: it is what allows a different and exceptional biodiversity. The wetland houses up to 400 taxaten species of threatened birds and one of the most important Audouin’s gull breeding colonies in the Mediterranean. Without that difference in salinity, many of those ecological niches would disappear. The NASA image is also more than a photograph: it portrays the fragile balance between industry, microbiology and conservation that climate change is already testing as temperatures rise and salinity fluctuations alter the living conditions of Dunaliella salinaor what is the same, that that striking pink color seen from space could disappear. Why is it important. Dunaliella salina is the organism that supports the base of the food chain in hypersaline lakes around the world. Since 1966 it has been grown commercially to produce β-carotene, which has applications in pharmacology and cosmetics. But it is also an organism that NASA has on the radar because it constitutes a form of life in extreme conditions. It should be remembered that the data from the Perseverance rover indicates that there were hypersaline waters in the Jezero crater of Mars. Studying life in these types of lakes helps understand the potential in these old Martian lakes. What makes Torrevieja pink is the best laboratory we have to know what to look for on another planet. In Xataka | 60 years ago, NASA took a look at the Sahara from space and found a very strange “perfect eye” In Xataka | Europe has been watching Colombia for a decade from space and what it has seen is a tragedy: the death of a glacier Cover | POT

Without gas stations in space we will not reach Mars. NASA knows this and is finally doing something about it

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Much of a spacecraft’s fuel is consumed in maneuvers to leave Earth’s orbit. For this reason, as manned missions move further away from our planet, we must begin to think about use space gas stations. These are not fuel pumps floating in space, but satellites, or even ships, capable of transferring fuel to a ship that needs it to travel further. At the moment, this is one of the weak points of many missions, so it is important to start working on technologies that allow it. At NASA they are very aware of this problem, hence this year they are going to launch LOXSATa mission that will test 11 different technologies to guarantee the transfer of propellants. 9 months ahead. LOXSAT is a NASA mission in collaboration with the company Eta Space. The objective of this mission is to test different cryogenic fluid management technologies so that in the future propellant tanks can be created in space. The mission will remain in low Earth orbit for 9 months. Meanwhile, 11 technologies will be tested focused on achieving four objectives: reducing boiling, improving propellant transfer, maintaining stable pressure and measuring propellant levels. The big problem. Cryogenic propellants, such as liquid oxygen at extremely low temperatures, are very efficient, but they have a major disadvantage. And in microgravity conditions, when the transfer between ships is carried out, the temperature cannot be kept low enough, so the fuel boils and suddenly transforms into gas. This causes a huge increase in pressure, which can endanger the ships involved. It seems to be that precisely this problem is the one that is giving SpaceX the most headaches. Like Blue Origin, this company must demonstrate its ability to refuel in space to be part of the Artemis missions, but it is not being easy. This is the reason why with LOXSAT methods will be tested to maintain stable pressure and reduce boiling. Space gas stations. The objective of this mission is to perfect the technology so that in the future there can be fixed propellant tanks in space. In other words, they hope that as we colonize space terrain we have gas stations so as not to run out of fuel. China on the heels. Ideally, in the future, large ships could exchange propellant. No space agency has achieved anything like this. However, China has indeed achieved it with satellites, in their Shijian missions. Plus, they did it in a higher orbit, so they are ahead of NASA in the particular race that has been uniting them for so long. Of course, at the moment, China has not tested cryogenic propellants, but tried hydrazine replenishment. There is still room for improvement. Write down the date. The mission will depart aboard an Electron rocket from Rocket Lab. The launch will be in the summer, no earlier than July 17, from New Zealand. Images | POT In Xataka | Jeff Bezos’ space company has overtaken SpaceX in a key milestone to go to the Moon and Mars: zero evaporation

NASA has an appointment with Mars today (although its ship already has its eyes set elsewhere)

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The Psyche spaceship, launched by NASA in 2023 to study the asteroid with the same name, it will reach its destination in 2029. However, today it will make its first stop along the way. If we stop at gas stations and roadside bars to stretch our legs and have a coffee, Psyche will approach Mars at almost 20,000 kilometers per hour, to tune some of its instruments while taking photographs worthy of the best wallpaper. In fact, we can already see some of them. Too close for space. Psyche won’t stop at the gas station like we did, but she will make a great approach. At 3:28 PM EDT (9:28 p.m., Spanish peninsular time), will be located 4,500 kilometers from the red planet. That, in spatial terms, is very little. Gravity assist. At this stop along the way, Psyche will take the opportunity to take some photographs and adjust her instruments, but she will also use Mars as a springboard to reach her destination faster. When a ship approaches a moving planet, it is attracted by its gravitational field. It does not touch the planet, but that interaction changes its trajectory and helps it gain speed with less propellant expenditure. We can imagine it as a ball being thrown towards a moving vehicle. This changes its trajectory and also gives it speed on the return trip. Psyche uses solar-electric propulsion, with xenon gas as fuel. Thanks to that push, known as gravitational assist, you can save quite a bit of propellant. A whole entourage. The result of this interaction will be studied by the two NASA rovers that are currently on Mars, Curiosity and Perseveranceas well as by American and European orbiters that are carrying out their respective missions. Not only photographs will be taken. Possible changes to the Martian surface and atmosphere will also be detected. first photos. Psyche has already taken a very interesting photoin which the night side of Mars is seen as the spacecraft approaches it. The result is something similar to a half moon, although logically it has nothing to do with it. The real goal. Thanks to Martian gravitational assistance, Psyche will reach the asteroid with the same name in 2029. This is located in the asteroid beltbetween Mars and Jupiter. Shaped like a potato and 278 km long and 232 km wide, it is a metallic asteroid, one of the least abundant types in that location. That’s why it’s so interesting to explore. In fact, it is believed that it is actually the iron-nickel core of a planet in formation that could not complete the process because it was destroyed by cosmic collisions. For all this, Psyche (the ship and the asteroid) has a lot to teach us about the birth of a planet and, possibly, about the dawn of the solar system. As we often say, to know where we are going, it is also important to know where we come from. That is what makes this type of research so important. Image | POT In Xataka | NASA has sent its spacecraft to observe a dead robot on Mars. The reason: seeing how it accumulates dust

NASA’s new ion engine, a fundamental piece to reach Mars

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Ion engines are not new. There are many satellites that have used them to stabilize themselves in their orbit. It has also been used in small ships like that of the Psyche missionwhose objective was to explore the asteroid with the same name. However, NASA wants to go further and create an ion engine so powerful that in the future it can be used to take humans to Mars. There is still a long way to go; But, according to their latest evidence, they could be on the right track. The most powerful ion engine. Until now, the most powerful ion engine that has been used to go to space has been that of the Psyche mission. With it, a speed of 200,000 kilometers per hour has been reached. Instead, NASA scientists have recently tested a much more powerful engine on Earth. It is a lithium-powered magnetoplasmadynamic thruster, which uses an electric current, which interacts with a magnetic field to accelerate a lithium-ion-based propellant. All this is done in a vacuum chamber 8 meters long. After the tests, 120 kilowatts of power have been reached: 25 times more than with Psyche. It is still not enough to travel to Mars, but, after the success of the tests, these researchers hope to be able to scale the process until they achieve 4 megawatt engines. Several of those could be used to conquer the red planet. Different ions. Broadly speaking, an ion engine consists of a vacuum chamber in which an electromagnetic field accelerates electrically charged atoms through a nozzle, generating thrust. Those charged atoms are the ionic propellant. Traditionally, xenon is used, although metallic plasmas have also begun to be explored. That’s where lithium comes into play. Advantages. Ion-powered engines use 90% less propellant than chemical ones. That, in itself, is already a great advantage. On the other hand, although they start with a very low speed, they have the advantage that, in the absence of friction, as occurs in the vacuum of space, they keep accelerating for a long timeso they can reach very high speeds. This is how has been achieved that many satellites can adjust their orbit. A key piece is missing. In order to start this electromagnetic field, an energy source is needed, which is normally obtained through solar panels. However, to go to very distant places where the Sun does not reach so easily, it would be necessary to look for alternatives. For this reason, NASA scientists consider that this ion engine should be complemented with the nuclear thrusters that Both this agency and others have been studying for some time. In the case of NASA, They have made a lot of progress with Space Reactor-1 Freedoma nuclear-powered spacecraft, whose first launch is scheduled for 2028. Investment is needed. In order to scale what has been achieved so far, strategic investments will have to be made, as NASA Administrator Jared Isaacman has already pointed out. in statements collected by Space. The scale they want to make is not small, so they are still waiting to receive adequate financing. In the meantime, you can at least be proud that the first 5 firings of this initial prototype went perfectly. Image | POT In Xataka | The West stopped building nuclear power plants because they were too expensive: China is teaching it a lesson

We have been thinking about a single path to Mars for decades. A group of scientists has just found a “shortcut”

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If you travel to the Moon It’s quite a challengethe next step is only for the brave. To date, no one has traveled to Mars and even unmanned trips encounter multiple drawbacks. The first of them is the duration of the trip itself, since it can extend up to 8.5 months, one way. Almost nine months of space route, with all the inconveniences that may arise during it. That is why the shortcut that a team of scientists from the State University of Rio Janeiro has just proposed is so interesting. With it, the trip could be shortened to 153 days, round trip. The key is in the asteroids. The authors of this study They have looked for shortcuts on the route to Mars in a quite interesting way: by noticing other travelers. After studying the trajectories of several asteroids, they have focused on those whose orbit intersects both that of Mars and that of Earth. Until now, the trajectories are designed from the Earth’s orbital plane. If the orbital plane of one of these asteroids, specifically 2001 CA21, is also taken into account, new paths are opened, which were hidden from our planet. One of those paths, according to the study, would drastically reduce the duration of trips to Mars. The asteroid is not a vehicle. It is important to note that this study does not propose using asteroids as a vehicle to Mars. They simply use them to open horizons to other trajectories. We from Earth see only a few “roads”, but asteroids like this have other options. By looking for connection points between the Earth’s orbital plane and that of these asteroids, it can be linked to these other routes, some of which turn out to be more direct. Traditional tours. Normally, to travel from Earth to Mars something known as the Hohmann trajectory is used. This consists of beginning to make a turn around the Sun in our own elliptical orbit; to, when the time comes, take advantage of its gravitational pull and extend the ellipse to the Martian orbit. Broadly speaking, the ship does not go in a straight line to where the destination planet is, but rather travels to where it will be at a given time. It is not a short trip, but with it, by taking advantage of the gravitational pull, fuel consumption is greatly reduced. Planned trajectory for ESA’s ExoMars For this to be carried out, launch windows must be taken advantage of in which the Earth, the Sun and Mars are properly aligned. All this lengthens trips a lot. A change of plane. The orbits of the different objects that revolve around each other are not all in the same plane. Each one has its own plan. Like a sheet of paper that is spinning. The Earth’s plane is not exactly the same as that of Marsbut very similar. That of the asteroid in this study, however, is very different and is much more inclined. That is why it allows us to open the window to new trajectories. As explained in Wired, It is something like opening a secondary window in a video game to see a scenario that we do not see in the main one. Multiple launch windows. Taking into account the need to have a proper alignment between the Earth, the Sun and Mars, there are soon three interesting launch windows to travel to the red planet: 2027, 2029 and 2031. By studying them one by one, the authors of this study saw that it is in 2031 when the best alignment with the plane of the asteroid occurs and, therefore, a much faster opportunity for travel. In the best case, Mars could be reached in 33 days. The complete trip would be 153 days, although in less optimistic cases it could be 226 days. Be that as it may, it is still much less than those 9 months, one way, that it takes now. Other asteroids. Although the study has been carried out with specific data from a single asteroid, these scientists believe that, in reality, the orbital planes of others could be taken whose trajectories also intersect with Earth and Mars. Basically, the key is to look outside the box. Or, much more literally, out of shot. There are many interesting routes out there. More powerful propulsion systems. All this sounds beautiful, but there is a big drawback that we must take into account. And, in order to carry out this process, much more energy is needed. Therefore, it would be necessary to resort to practically unfeasible quantities of fuel or to new, more powerful propulsion systems. Today this is not possible, so advances in this regard should go in parallel with the development of advances in propulsion systems. Many examples are already being investigated, such as the use of nuclear energy. Even has been proposed use lasers, although it is a project that is very much in its infancy. There is still a long way to go, never better said, but if the future is in these short and alternative trajectories it must also be in new propulsion systems that leave traditional ones behind. Image | NASA | THAT In Xataka | ExoMars, this is Europe’s most ambitious mission to Mars

NASA wants to head to Mars in December 2028. To achieve this, it is going to use something: nuclear reactors

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Virtually all major space companies They agree that the future of space exploration involves feeding ships with nuclear energy. For this reason, NASA has already set a date for its first interplanetary trip with nuclear-electric propulsion. It will be possible thanks to Space Reactor-1 (SR-1) Freedom, which will be launched in December 2028 heading to Mars. Destination: the red planet. NASA has long shown interest in carrying out this launch in 2028. Now, the company has assured that everything is going at a good pace and that, if it continues like this, the date could be closed around the last month of this year. In order to meet deadlines, technologies previously tested by NASA are being used. Some, for example, come from the Lunar Gateway Station, whose development is currently paralyzed. With these technologies, together with a new nuclear reactor system, a trio of helicopters similar to Ingenuity, baptized as Skyfall, will be taken to Mars. The classic and the new. The SR-1 actually runs on a closed Brayton system, which is very common for power. Normally, in these types of systems A combustion reaction takes place, which produces energy in the form of heat. This is used to heat a gas, which expands and drives a turbine. The result is mechanical energy that can be used, for example, to obtain electricity. Then, when the gas cools, a new cycle begins, which is why it is said to be a closed cycle. In the case of the SR-1, everything is almost identical. The only difference is that, instead of a fuel, a nuclear fission reaction is used to obtain the heat. Thus it is not necessary to transport large quantities of fuel into space. Just a chain reaction like those used in nuclear power plants. electric motors. The electricity obtained in this closed cycle is used to power electric motors in a process that is activated 48 hours after launch. Afterwards, you can stay active during the entire year of the trip to Mars. On the other hand, this same electricity can also be used for other purposes, such as communications with Earth. Also on the Moon. The main application of nuclear energy in space will be in very long-distance travel, where the ships are so far from the Sun that solar panels are no longer useful. However, it can also be useful at much shorter distances. If this trip to Mars goes well, NASA plans to be able to use these technologies at a lunar base installed in Shackleton Crater. Strategically it is a good locationbut it has the disadvantage of being continually in shadow, so solar energy cannot be used. Nuclear fission could be much more useful. 60 years of research. In reality, the SR-1 is the result of 60 years of research, with an investment of 20 billion dollars. Although it may seem like something new, there is a lot of work behind it. Still, if NASA’s projects go as planned, they will be time and money well spent. Image | POT In Xataka | The West stopped building nuclear power plants because they were too expensive: China is teaching it a lesson

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