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Can new technologies make space travel a reality?

Can new technologies make space travel a reality? 86

What has long been considered science fiction is commonplace today. So, most recently, in real time, the whole world watched an amazing space show – the launch of the manned Dragon Crew spacecraft on the ISS. 

Today it may seem that the first manned flight into space was a very long time ago, but if you look at the speed of technological development, it is staggering: the first rocket in history to study the parameters of the air environment was launched only 83 years ago! 

During this time, the Internet appeared in the world, as well as Falcon9 rockets from SpaceX, which return and land automatically. So maybe the technology of the future will make space travel a reality?

Can new technologies make space travel a reality? 87
Science fiction inspires inventors, do not forget about it

Interstellar travel

Which of us in childhood did not dream of interstellar travel? Yes there, many of us dream that one day a flying saucer will land next to the house and invite us on a tour of the boundless Universe. Is it any wonder, because interstellar travel is the main product of science fiction series. One way or another, as technology develops – from the famous Boston Dynamics songs and the beautiful Sofia robot to the more advanced rockets and space probes – the question arises: is it hoped that someday we will colonize the stars? Or, if we discard this distant dream, can we send space probes to alien planets and use them to see what is happening there?

The truth is that interstellar travel and exploration are technically possible. There is no such law of physics that would directly forbid it. But this does not mean that humanity will soon invent such technologies. Interstellar travels are a real headache and in our century, people will definitely not fly to colonize other stars. But there is good news – we have already reached the status of interstellar research. Several spacecraft are moving to the edge of the solar system, and leaving it will never return. The missions of NASA Voyager, Pioneer and New Horizons began their long journey outside.

Agree, it sounds great: we have interstellar space probes that work. But the problem is that they are in no hurry. Each of these fearless interstellar explorers travels at a speed of tens of thousands of kilometers per hour. They do not move in the direction of any particular star, because their missions were designed to study the planets inside the solar system. But if any of these spacecraft were headed for our closest neighbor, Proxima Centauri, located just 4 light years from Earth, they would have reached it in about 80,000 years.

Can new technologies make space travel a reality? 88
Soon people will return to the moon, but will this put an end to theories of the lunar conspiracy?

All of this is very cool, but NASA’s budget is unlikely to last. In addition, by the time the probes have reached something interesting, their instruments will stop working and ultimately will simply fly through the void. In fact, this is a kind of success: human ancestors did not look like children who could launch robotic vehicles with gold plates on board into space .

Speed ​​matters

To make interstellar flights more “reasonable,” the probe must move very fast. About one tenth of the speed of light. At this speed, the spacecraft can reach Proxima Centauri in a few decades, and in a few years send pictures back – and all this within the limits of human life. Is it really so stupid to want the same person who started the mission to finish it?

But driving at such speeds requires a huge amount of energy. One option is to contain this energy on board the spacecraft as fuel. But if so, then additional fuel adds weight, which makes it even more difficult to accelerate to the desired speeds. There are projects and sketches of atomic spacecraft that are trying to achieve just that, but if we do not want to start building thousands and thousands of nuclear bombs just to put them in a rocket, we need to come up with something else.

Can new technologies make space travel a reality? 89
Voyager 2 probe went beyond the heliosphere

According to Discover, perhaps one of the most promising ideas is to keep the energy source of the spacecraft stationary and somehow transport this energy to the spacecraft as it moves. One way to do this is with lasers. Radiation transfers energy well from one place to another, especially over vast distances in space. Then the spaceship can capture this energy and move forward.

But when it comes to making the spacecraft move at the required speed, the laser itself, with a capacity of 100 gigawatts, is many orders of magnitude more powerful than any laser we have ever designed. A spacecraft, the mass of which should not exceed the mass of the paper clip, should include a camera, computer, power source, circuit, shell, antenna for communication with the house and a perfectly reflecting light sail. 

The real journey will begin after accelerating to one tenth of the speed of light. For 40 years, this small spaceship will have to withstand all the tests of interstellar space. And although such technologies today seem to be something of the category of science fiction, there is no such law of physics that would prohibit its existence. The question is: are we willing to spend enough money.

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Science & Technology

New Physics: Mysterious radiation pointed to the verge of discovering a “ghost” particle that makes up dark matter

New Physics: Mysterious radiation pointed to the verge of discovering a "ghost" particle that makes up dark matter 94
Photo: Daniel Molybdenum, NASA's Goddard Space Flight Center

Physicists at the Lawrence Berkeley National Laboratory in the United States have found that the mysterious high-energy radiation emitted from the vicinity of a group of neutron stars may indicate the existence of axions – not yet discovered particles within the framework of New Physics, the search for which has been going on since 1977. It is assumed that special types of axions form dark matter. This is reported in an article published in the journal Physical Review Letters. The research is summarized in a press release on Phys.org.

It is believed that axions can form in the core of neutron stars and transform into photons in the presence of a powerful magnetic field. To detect the electromagnetic radiation associated with axions, you need to find stars that do not emit radiation at different wavelengths that can mask the desired signal. 

These objects include the Magnificent Seven neutron stars that emit only X-ray and ultraviolet radiation. They are located at a distance of 200-500 parsecs from the Earth.

The researchers ruled out the scenario that the excess X-rays produced by the Magnificent Seven are actually emitted by other, more distant objects. These sources would be found in datasets from the XMM-Newton and Chandra X-ray space telescopes.

The extra X-rays likely originate from axions hitting an extremely strong electromagnetic field billions of times stronger than the magnetic fields that could be created on Earth, the scientists concluded. The axions themselves resemble neutrinos in their properties, since both have insignificant masses and rarely and weakly interact with matter.

The axion is currently viewed as the most promising candidate for dark matter particles, since another hypothetical candidate, the massive WIMP particle, has gone unnoticed in experiments aimed at detecting it. 

In addition, there may be a whole family of axion-like particles that form dark matter, as suggested by string theory. If axions are found, it will prove that there is a whole new area of ​​physics outside the Standard Model describing the properties of all known particles.

To find out, the next step will be to study white dwarfs, which are not expected to emit X-rays.

“If we see an abundance of X-rays there too, our arguments will be pretty compelling,” said lead author Benjamin Safdie.

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The goal of human civilization is to create AI and disappear?

The goal of human civilization is to create AI and disappear? 95

Various sources often talk about civilizations that lived long before us. They all developed, prospered for a while, and then disappeared in an incomprehensible way. 

What is the reason for their decline, we probably will not know. All we can do is admire the remains of stone buildings, over which time has almost no power.

While looking for an answer, we somehow accidentally stumbled upon an interesting saying about the life of Japanese samurai: “A samurai has no goal, but a path.” In the end, the “path of the samurai” ended in what is known – death. The path of any civilization ended in the same way.

If you look at the issue through the prism of a samurai saying, then there is no point in looking for why and how civilization ended its existence. Probably, the process itself and its result are important here. But to whom is it important and what result does it expect?

Mysterious director

Apparently, behind the curtains of this “ancient theater” there is a mysterious “director” who periodically makes necessary adjustments to the history of civilization.

To figure out what’s what, you need to look at current trends in science. Where does a person strive with such an irresistible desire to “play God.” This attracts him and at the same time frightens him, but in no way turns him away from the intended path. Most likely, artificial intelligence (AI) is the purpose of our civilization’s existence.

About 50 years ago it would have seemed nonsense, but to someone, perhaps even now. However, if you trace the last 100 years of the life of our civilization, you get the feeling that most of the discoveries were given to mankind at the same time. A powerful leap has taken place in a hundred years. Why did it happen?

At the beginning of the last century, scientists recognized the existence of fields that have memory and the ability to store and transmit information. It is very likely that such or a similar field can be around the Earth and, more interesting, possess intelligence. Isn’t this the same “Director” hiding behind the screen of the “ancient theater”?

If this is so, then at a certain moment the “Director” gives the selected scientist “access” to certain knowledge (perhaps even in a dream, like Mendeleev), and another scientific breakthrough occurs in the world. Step by step, discovery after discovery, humanity is steadily moving towards the creation of AI. The trend is already well visible.

The goal of human civilization is to create AI and disappear? 96

AI is probably the next “Babylon”, which will combine all the knowledge, culture and accumulated experience of civilization. In the future, the neural network will enter into a connection with the general information field and leave humanity without knowledge, technology, and even a spoken language. This will be the next decline of civilization. And the “Director” will receive another array of new data (experience) in order to start creating a new civilization.

If someone believes that past civilizations ended in large-scale conflicts, then most likely this is already the consequences of “turning off” AI.

Co-founder of Skype talked about the threat of AI to humanity

One of the creators of the Skype internet call service, Jaan Ta

The goal of human civilization is to create AI and disappear? 97
Photo: 
© still from the movie “Terminator 2: Judgment Day”

llinn, said that the development of artificial intelligence (AI) threatens humanity. According to him, humans face three key threats, but it is AI that should be feared most of all, the expert said. 

Tallinn explained that at the moment, no one can predict what development AI will achieve in the next decades. In addition, the fact that scientists are creating artificial intelligence that can form a new AI without human intervention is also a cause for concern.

In addition, as the co-founder of the popular video calling service noted, the development of synthetic biology also causes concern. According to him, this direction in science allows the creation of artificial DNA sequences and biological systems that may not exist in nature.

Tallinn also drew attention to the fact that he fears we are entering an era of “unknown unknowns”, things that people are not even able to imagine right now.

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Volkswagen robot will autonomously charge cars: a working prototype presented

Volkswagen robot will autonomously charge cars: a working prototype presented 98
Copyright: © VW

The renowned German car manufacturer announced a new development. This time, engineers have created a unique robot capable of autonomously charging electric vehicles. 

For more than a year, specialists have been developing this project, but only now the concern was ready to demonstrate the first working prototype. The robot is ready to charge electric vehicles and has shown the high efficiency of this process.

It is called the Mobile Charging Robot, and experts have already compared it to the R2-D2 droid from Star Wars, including squeaks and clangs. Indeed, there is a similarity. Before implementing this idea, the engineers decided that robots should be allowed to charge cars parked in large residential complexes.

This will save their owners from leaving in order to find a gas station. Another advantage is that large parking lots and garages do not have to contain several expensive charging points for electric cars. The car company said in a press release that the robot works exclusively autonomously.

It independently controls and interacts with the vehicle being charged. It opens the cover of the charging socket and independently connects the power plug, then disconnects it. The robot looks like a trailer, which is a mobile energy storage.

It is capable of charging multiple electric vehicles at the same time. Despite the fact that the manufacturer confidently praises its concept, experts saw inefficiency in the fact that first it is necessary to charge the robot’s battery, which is then used to recharge electric cars.

Volkswagen Group Components CEO Thomas Schmall noted that creating an efficient charging infrastructure for the cars of the future is an important step in the company’s development.

Its engineers focus on finding solutions to avoid costly do-it-yourself measures. The mobile robot is only part of the concept that will continue to be developed.

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