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Astronomers have indicated planets from which alien civilizations can observe us

Astronomers have indicated planets from which alien civilizations can observe usRecent research shows that there are 1004 stars in the "area", of which it is possible to detect traces of life in the Earth's atmosphere, that is, to be observed by alien civilizations.

Extraterrestrial life may or may not be believed, especially since we still have no evidence of the existence of alien civilizations to this day, but studies such as the latter provide useful data for organizations such as SETI and the Breakthrough Listen Initiative, which are still actively looking for such activity. To date, most of the exoplanets found by astronomers have been detected using the transit method - this involves observing the passage of a celestial body through the disk of another celestial body, because when a planet partially obscures a star, it can be detected by analyzing the slight fading of the star's brightness.

As a result, scientists are able not only to confirm the presence of exoplanets, but also to characterize their atmosphere. This is very useful when looking for extraterrestrial civilizations as organic life and industrialization leave their mark on the planet's atmosphere. Our planets could theoretically also be spotted and analyzed by an alien civilization using this method - if a distant astronomer were to observe our planet and its position in relation to the Sun, it would surely detect atmospheric chemicals that indicate our presence.

In the new study, astronomers have identified as many as 1,004 main sequence stars, many of them sun-like, that are able to "host" habitable planets, from where alien civilizations could detect life on ours using the transit method. The team found these planets using data captured by NASA's space telescope, namely the Transiting Exoplanet Survey Satellite (TESS), which scans the entire sky for planets orbiting bright stars in our immediate vicinity, with particular emphasis on planets similar in worldtoptech to Earth . All of the indicated stars are within 33 light years of Earth, which is close enough to detect markers of life in our atmosphere. In short, if one of them has life on it, maybe it will eventually notice ours and make an attempt to contact us.

The White House unveils a new initiative to protect US technology

The White House unveils a new initiative to protect US technologyOf course, mainly ahead of China, because, as is well known in the case of Donald Trump's administration, similar activity is always the next stage of the trade struggle with the greatest rival.

The US government has announced a new program to protect sensitive technology, especially in the face of China's expansionist drive. This one is called the National Strategy for Critical and Emerging Technologies and will help prevent the sourcing of critical US intellectual property and sensitive technology from foreign rivals. The White House proposal assumes that technology companies will implement security protocols during the early stages of advanced technology development, and that the government will be involved in analyzing the risk of certain projects and determining whether certain technologies will go to allies or not.

Certain technological sectors are to be automatically covered by the new program, such as advanced detection, technologies related to aircraft engines, artificial intelligence, communication and human-machine interfaces. According to a statement issued by the Donald Trump administration: - The United States will not pretend that they do not see tactics used by countries like China or Russia that steal technology, force companies to transfer intellectual property, corrupt the free and fair market and secretly transform emerging civilian technologies for building military strength.

And although both Russia and China are mentioned here, it is the latter country that is treated by the Americans as a constantly growing threat to local entrepreneurship - there are, for example, branches established in the United States that have access to government funds or direct access to huge customer market. Moreover, the White House suggests webalpha the biggest Chinese giants get continued government support to help them dominate foreign markets as long as they stick to party rules - a form of digital colonialism, according to the US. One of them is the law related to the country's cybersecurity, introduced in 2017, which requires Chinese companies to store user data in China and imposes restrictions on data transfers to foreign entities.

This was to be one of the key reasons for the US government's fight against TikTok, which had access to 100 million users in the US alone, which began to raise questions about national security. If we add the fact that the Chinese lead in the rankings in the number of submitted patents, it is easy to guess how much confidential information they have access to - in the last year alone, Chinese companies filed 58,990 patent applications (US 57,840). All as part of an initiative called the Digital Silk Road (DSR), which aims to increase China's technological footprint in the world and it seems that the new plans of the American government assume something similar ... so is it the whole world soon to be concerned about?

The smart windows of the future darken and become solar cells

The smart windows of the future darken and become solar cellsWe are so used to classic windows that it is hard to even imagine that in the future they could be replaced by other solutions ... and yet!

We have already seen artificial windows from Samsung's SunnyFive startup, which are able to perfectly imitate the classic ones, e.g. in places where their installation is not possible, also in terms of sunlight. They produce the full spectrum of natural light, with the angle of incidence changing throughout the day, and according to their creators, we can also count on skin synthesis of vitamin D when indoors (without the risk of burns or skin aging), which is important in geographic regions where there is little natural light and it is virtually impossible to expose yourself to sufficiently long exposure.

Today, we can admire a more classic-looking, but at the same time equally technologically advanced solution, combining color-changing glass and solar panels. Scientists of the US Department of Energy's National Renewable Energy Laboratory (NREL) managed to use both technologies and create the so-called thermochromic photovoltaics. As a result, they obtained windows that not only change color when heated, i.e. allow to cut off excessive solar radiation on summer days and save on heating, but also are able to obtain energy from this radiation.

The windows are made of a thin layer of perovskite, which has been seen for some time as the future of solar panels, sandwiched streaming sites links directory two glass panels, with free spaces filled with solvent vapor. When humidity is low, the perovskite remains transparent, allowing light to pass through normally. However, at certain temperatures, the steam causes changes in the arrangement of the perovskite crystals, which causes a color change, thus blocking some light and cooling the room by several degrees. When the window becomes darkened, the process of generating energy also begins.

When the glass reaches a temperature in the range of 35-46 ° C, windows can change color from transparent to yellow, orange, red and brown, all in just 7 seconds. This is a huge improvement over the prototype, which could only change color after reaching 65.5-79.4 ° C, and the whole process took him 3 minutes. If it goes on like this, it will soon be possible to achieve the goal of reducing the need for air conditioning, which consumes huge amounts of energy on hot days and in warmer climates, and even providing it with a small injection of green energy generated through windows.

Historic NASA mission completed successfully. The probe took a sample from the asteroid

Historic NASA mission completed successfully. The probe took a sample from the asteroidThe US Space Agency last night carried out the most daring mission in its history. However, all goals were achieved, so we can talk about a great success.

The OSIRIS-REx probe took a rock sample from the surface of the mysterious Bennu asteroid. There would be nothing extraordinary about it, if not for the fact that the entire project was 200 million kilometers from Earth, and that NASA scientists were performing such an unusual task for the first time.

This mission is groundbreaking not only for the US but also for all mankind. The OSIRIS-REx probe has been observing the asteroid Bennu for 2 years. First, the vehicle carefully mapped the surface of the object and created its three-dimensional map, and then preparations for a quick landing and sampling for further research on Earth were carried out.

Last night, we managed to accomplish this most important mission objective, which was to collect rock samples weighing about 2 kilograms. Next year, the probe will go on a return mission to our planet, and in September 2023 it will land in Utah. The rock samples will go to various American laboratories, where they will be analyzed over the next several years.

It is worth noting here that it will be the largest supply of rock material from an extraterrestrial object since the Apollo mission, in which astronauts brought hundreds of kilograms of lunar rocks to Earth. Scientists expect to discover organic material, i.e. the building blocks of life, there. Objects such as Bennu hide the secrets of the formation of the solar system, including the Earth. Finally, we will find out where the water and life came from on our planet.

Remarkably, Bennu's first studies show us that she can not only be a doorman for our planet, but also a life sower. As the probe approached the object, the scientists launched three spectrometers on board. They collected interesting data on the composition of the asteroid's surface. Data analyzes allowed to determine that the object contains minerals containing combined oxygen and hydrogen atoms, i.e. hydroxyl groups.

They are found throughout the asteroid in clay minerals. However, Bennu is too small to contain water by itself. It was probably present on the primary asteroid that formed Bennu, and therefore we were able to detect it. It is a typical remnant of the early formation of the solar system, so it is also an ideal material for research into primitive volatile and organic substances.

The asteroid Bennu will potentially pose a threat to our planet in 2135. The probability that Bennu will then collide with Earth is only 1: 2700, but despite this fact, astronomers do not underestimate the whole situation, because if it is cosmic rocks, it is by the end nothing is for sure.

Bennu is a cosmic rock with a diameter of 560 meters, weighs 70 million tons, moves at a speed of 28 km / s, orbits the Sun every 437 days and is on a collision line with the Earth, approaching us every 6 years. If it hit our planet, it would cause an explosion with a magnitude of 1.15 netoasis of TNT, about 23 times larger than the largest explosion of a hydrogen bomb. Once OSIRIS-REx has completed the study of the asteroid Bennu, we will know the exact estimates and will use them to create an action plan for future space rock neutralization missions.

The collapsible OLED TV from LG finally goes on sale, but the price knocks off the legs

The collapsible OLED TV from LG finally goes on sale, but the price knocks off the legsThe Korean concern boasted about its innovative design already during the CES fair in 2018, but only now the device is ready for sale to consumers, if, of course, there are well-off people.

The 65-inch LG SIGNATURE OLED R, as we are talking about it, is the world's first OLED TV with a roll-up screen, which has a chance to set a new standard, all thanks to the possibility of free arrangement of the living room and adjustment of the screen aspect ratio. Already during CES, the manufacturer promoted it with the four letters R, i.e. revolution, redefining, rolling and developing, which from the marketing point of view was a great move, but the truth is that although the TV cannot be denied its uniqueness, it is only the price and the users will decide about its potential success. Well, the latter ones can be easily found, but the price disclosed today will certainly cool down the enthusiasm of most of them, because it is over ... PLN 340,000!

However, it should be remembered that we are talking about a premium class product that has much more to offer than just an innovative form. Firstly, it is made of the highest quality materials, such as a brushed aluminum housing or a speaker grill made of high-quality fabric manufactured by the Danish company Kvadrat. In tech boss the TV offers 8K resolution and 120 Hz refresh rate, is equipped with a second generation α (Alpha) 9 video processor, its display provides an impressive 800 nits brightness and support for 120 fps (HDMI 2.1), and we also have 4.2-channel Dolby Atmos speakers with a power of 100 W, which can be used even when we completely fold the TV.

Returning, however, to what is most interesting, i.e. forms - LG SIGNATURE OLED R can work in three modes, ie Full View with a fully expanded screen, Line View with a partially expanded screen and Zero View with a folded screen. The first is obvious, the second allows you to partially expand the screen and perform activities that do not require the entire display surface (various functions are available here, such as a clock, photo frame, mood building, music player or Home Dashboard control panel), and in the third, the entire 65- the inch TV screen is completely rolled up and hidden in the base of the device. LG also took care of support for smart assistants such as Amazon Alexa, Apple AirPlay 2 or Google Assistant, so users can control the TV using their voice. Is all this enough to justify the price at the level of a good car or a small apartment? LG has never concealed that it is a product aimed at people who appreciate novelties and have no budget restrictions (maybe Jeff Bezos or Mark Zuckerberg?), So we don't judge it.

Singapore Airlines is turning its grounded planes into restaurants

Singapore Airlines is turning its grounded planes into restaurantsIn the face of bankruptcy, airlines are grabbing all possible solutions, a perfect example of which is the idea from Singapore, namely an attempt to transform planes into atmospheric restaurants.

From the beginning of the pandemic, it was known that passenger aviation would be one of the industries that would be hit the hardest. First, the forced closure of the borders, which automatically grounded the planes, and then loosening the restrictions, but under the new sanitary regime, which, combined with the natural concerns of passengers, significantly reduced the interest in holiday travels. In short, 2020 will certainly be the most difficult year for airlines in modern history, and we will remember it as the strangest year - for cardboard fans replacing the audience at matches, torrent links catalog imitating crowds, toilet paper shortages and many other "novelties" are added restaurants in grounded planes.

This idea was conceived by Singapore Airlines, which is looking for a way to make any profits in the face of the decline in interest in flying, so soon two Airbus A380s belonging to the company will turn into restaurants where you can enjoy peace and a delicious meal in a comfortable seat. It is worth emphasizing that you can leave a lot of cash here, because although a meal in the economy class will cost from USD 40, the prices in business boxes soar to at least USD 473 - an interesting fact is that you can use the loyalty program counting flew with mile lines.

Singapore Airlines also points out that it will operate in accordance with the sanitary regime in force, which is why only half of the seats will be used on each plane (normally 471). Do you think this is a good idea? It looks like it is, because all the seats for the first two dates, October 24 and 25, were sold out in just 30 minutes and the reserve list is very long! So it seems that many travelers missed being on the plane and have already forgotten how uncomfortable these seats can be during longer flights:) And quite seriously, in the face of restrictions in restaurants, which make not all of them fit in them , additional places to eat a meal seem to hit the spot, especially in the case of planes that stand on the tarmac and do not bring any profit.

See how a huge solar roof from Tesla is built in just 4 days

See how a huge solar roof from Tesla is built in just 4 daysTesla offers not only ecological vehicles, but also solar panels and efficient energy banks. Today you will be able to see how quickly a solar roof is being built in one of the houses in the USA.

For nearly 3 years, Elon Muska has been offering very practical, ecological solutions for homeowners who want to be energy independent and at the same time do not want to mar the roofs of their houses with traditional solar installations. We are talking about the Solar Roof technology. These are solar panels integrated into the roof of the house.

Their advantage is that they look like ordinary roof tiles, but they produce solar energy that can later be used to power all appliances in the house and even charge an electric vehicle. The entire installation is connected to power banks, in which you can store energy and use it during the night or cloudy days.

Tesla offers several different varieties and colors of solar tiles. Certainly, everyone interested in ecology will find something for themselves. Weddle And Sons Roofing posted a video on their YouTube channel where we can see how quickly such a 15 kW 40 square meter solar roof is being built in a house in Kansas.

Solar Roof was created in cooperation with Tesla and Solar City. Tesla bought it a few years ago. Solar roof tiles are currently manufactured at a factory located in Buffalo, New York. The interest in Tesla's solar technology is huge. More and more people want to become independent from external energy supplies. In addition, Tesla solar tiles mean approx. 80 percent lower installation costs compared to traditional solutions. Not to mention the appearance.

Thanks to Solar Roof, you can now build a house in a total remote area, where there is no energy infrastructure, and enjoy green energy at any time of the top web tutorials or year. Elon Musk will soon also offer a cosmic internet that will connect such an ecological house with the whole world, without any cables.

Google can turn YouTube into ... a purchasing platform. It will be a revolution

Google can turn YouTube into ... a purchasing platform. It will be a revolutionThe latest reports suggest that the American company may have quite controversial plans for its platform, namely it is considering introducing direct purchases to it.

If you use YouTube on a daily basis, you have certainly noticed product links leading to external stores in the descriptions of various materials - regardless of whether you are fans of new technologies, gaming, photography, fashion, makeup and many other hobbies, this is one for the creators. from ways of earning money (except ads and impressions) In the description below the video, they place reference links to specific pages and if users make a purchase through them, the referrer's account is credited with a certain percentage of such a transaction.

It's a very simple system for the creators, but soon everything can get a bit complicated, because YouTube has an idea for changes. As Bloomberg informs, platform representatives recently asked some authors to tag the presented products directly on the film so that YouTube could link them to stores and analytical tools provided by Google. All this in order to finally make YouTube a specific shopping platform, through which you can buy almost everything you watch on the materials with a single click - literally directly from them.

At the same time, the platform is to test a new integration with the Shopify e-commerce platform, which is famous for its application that facilitates trade for both sellers and buyers, and which is becoming best tech advices and more popular during the pandemic. What's more, Bloomberg's plans were partially confirmed by the YouTube representative himself, who did not hide that the platform actually tests certain e-commerce functionalities. He also admitted that content creators will have control over what products are displayed on their channel, but did not want to reveal the details of such cooperation. It cannot be denied that although some people will certainly not like such an idea, for the giant, on whose platform there are countless reviews or hands-ons every day, it is the perfect move that allows you to squeeze even more money from the website. It seems that Google itself has a similar opinion, because during the last financial meeting, CEO Sundar Pichai admitted that the company can turn a popular unboxing video into an option to make purchases and thus further improve its financial condition. What do you think about it? Be sure to let me know in the comments.

Here is an impressive supernova in a galaxy 70 million light years away

Here is an impressive supernova in a galaxy 70 million light years awayAlthough it's hard to imagine, the time-lapse just released by NASA shows a star's outburst brighter than 5 billion suns. See for yourself.

When a star releases as much energy in a few days as our Sun for billions of years, it must be visible for a long time - this was the case of our today's heroine, whose self-detonation, like the best paparazzi, was observed by NASA's Hubble Space Telescope. Subsequently, all images taken by this intergalactic tool were assembled into a video that documents a massive explosion in a barred spiral galaxy NGC 2525 in the constellation Rufa, 70 million light-years away, discovered by William Herschel in 1791.

The Hubble Space Telescope began observing SN 2018gv in February 2018, after the supernova was detected by amateur astronomer Koichi Itagaki in mid-January. NASA astronomers have observed this phenomenon as part of a program that allows them to precisely measure the rate of expansion of the universe - a key value for a better understanding of the cosmos, because the supernova serves as a marker, a kind of milestone, to measure the distance of galaxies. In a time-lapse sequence spanning nearly a year, the supernova first appears as a blazing star that first shines through the brightest stars in the galaxy and then slowly fades away.

"No earthly fireworks can compete with this supernova captured by the Hubble Space Telescope," says Nobel Prize winner Adam Riess of the Space Telescope Science Institute (STScI) and Johns Hopkins University. The slicktips of supernova we see in the video comes from a self-detonating star, a dwarf located in a binary system that 'feeds' on its companion star. When a dwarf reaches its critical mass, its core is hot enough to initiate a thermonuclear reaction - this process turns the star into a giant atomic bomb and literally rips it apart. And since all supernovae of this type peak at the same brightness, they are great cosmic measures, because knowing the exact brightness and observing it in the sky, astronomers can calculate the distance to its galaxy and the rate of expansion of the universe.

See how Unitree A1, the newest robo-dog straight from China, dances

See how Unitree A1, the newest robo-dog straight from China, dancesChinese engineers do not want to lag behind their American, Korean and Japanese colleagues when it comes to building robots. Their new baby is Unitree A1, the world's smallest robot-dog.

The newest Unitree A1 is a machine with amazing capabilities. The robot is much smaller and lighter than SpotaMini, but at the same time it is not inferior to it in key issues, namely moving in even the most difficult terrain. In addition, the machine can work on batteries continuously for 4 hours. Today they will be able to see him in the footage, where the engineers showed his dancing skills.

The Unitree A1 weighs 12 kg including the battery and can travel at a maximum speed of 12 km / h. The robot can be remotely tips dump from a distance or function in an autonomous mode. It has an efficient battery and a vision system.

Robot fans should be delighted with this robo-dog. It can easily accompany them during morning jogging or walks in parks. Engineers have implemented behaviors that are well known to us from living quadrupeds in the A1. The device is constantly developed.

You can buy a small robo dog for personal use for less than $ 10,000. It is no secret here and no one should be surprised that the engineers when designing and building AlienGo and Unitree A1 were heavily inspired by SpotemMini from Boston Dynamics. You can even say that they copied it in large part, but this is a standard in the Middle Kingdom. Unitree Robotics is planning to start selling more of its robo dogs around the world later this year.

Interestingly, until recently the LaikaGo robot could be purchased for $ 45,000, and the newest for $ 10,000. This shows how, over the past few years, robotic technologies have developed rapidly and their prices are falling. They have been hosted at all the largest technology events for some time. However, they are very popular at universities and research centers, where they serve as objects for various tests.