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The Chinese telescope did not detect any strange signals. The search continues.



It was a project that launched thousands of dreams among the stars.

Fifty years ago, NASA published a thick 253-page book called Project Cyclops. He summed up the NASA workshop on the discovery of alien civilizations. The assembled group of astronomers, engineers and biologists came to the conclusion that a cyclops, a wide array of radio telescopes with 1000 antennas 100 meters in diameter, was needed. At the time, the project cost US$10 billion. Astronomers have said it can detect strange signals up to 1,000 light-years away.

The report began with a quote astronomer Frank Drakenow professor emeritus at the University of California, Santa Cruz:

At this very moment, almost certainly, radio waves sent by other intelligent civilizations are falling on Earth. It is possible to build a telescope that can be pointed to the right place and tuned to the right frequency to detect these waves. Someday, somewhere among the stars, answers will come to many of the oldest, most important, and most exciting questions that mankind has asked.

Cyclops report, long sold out But it is available onlineThis will be the bible for a generation of astronomers who dream that science can answer existential questions.

Jill Tarter, who read the report in graduate school and dedicated her life to the search for extraterrestrial intelligence, “for the first time we have technology that allows us to conduct experiments instead of asking priests and philosophers,” he said in Interview from ten years ago.

assigned to him…NASA

Cyclops and the work that inspired me this week reminded me when The word shone all over the world that Chinese astronomers discovered a radio signal that had the characteristics of an extraterrestrial civilization, i.e. had an extremely narrow bandwidth of 140,604 MHz, a precise nature that it would normally not be able to achieve on its own.

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They made this discovery with a new giant telescope called the 500m Aperture Spherical Radio Telescope, or FAST. The telescope was aimed at an exoplanet called Kepler 438 b, a rocky planet about 1.5 times the size of Earth and orbiting the so-called habitable zone of Kepler 438, a red dwarf hundreds of light-years away in the constellation Lyra. Its surface temperature is estimated at 37 degrees Fahrenheit, making it a candidate for the existence of life.

Just as quickly, an article about the discovery in the state newspaper Science and Technology Daily disappeared. Chinese astronomers douse themselves with cold water.

Zhang Tongjie, Chief Scientist at ET. China Civilization Research Group, newspaper quoted Andre Jones, journalist Those who follow Chinese developments in space and astronomy say: “The possibility that the suspicious signal is a form of radio interference is also very high and needs to be further confirmed or ruled out. It can be a long process.”

“These signals are radio interference; they are due to radio contamination from earthlings, not from aliens, ”he wrote in an email.

It has become a familiar story. For half a century, SETI, or the search for extraterrestrial intelligence, has been the mole, finding promising signals before tracking them on orbiting satellites, microwave ovens, and other terrestrial sources. Drake himself pointed a radio telescope at a couple of stars in 1960 and soon thought he had found gold, only to find that the signal had been lost by the radar.

Recently, a signal has been traced that appears to have come from the nearest stellar explosion, Proxima Centauri. Radio interference in Australia.

Just as NASA announced last week that it would make a modest investment in Scientific study of unidentified flying objects The intention was to bring the precision and practicality of what many have criticized as security thinking, such as the agency’s Cyclops Seminar held at Stanford for three months in 1971. The conference was hosted by astrobiologist John Bellingham and Bernard. Oliver, head of research at Hewlett-Packard Corporation. The men also edited the report of the conference.

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In the preface Dr. Oliver wrote that if anything happened to the Cyclops, that year would be considered the most important year of his life.

Said Paul Horowitz, professor emeritus of physics at Harvard University, who went on to develop and start his own listening campaign called Project META, funded by the Planetary Society. Filmmaker Steven Spielberg (ET and Close Encounters of the Third Kind) attended the official opening in 1985 at the agency’s Harvard-Smithsonian Station in Harvard, Massachusetts.

“SETI was real!” Dr. Horowitz added.

But what dr. Initially, Oliver received only the Golden Fleece Award from Senator William Proxmire, a Wisconsin Democrat who opposed what he saw as a waste of power.

“In my opinion, this project should be delayed by several million light years,” He said.

On Columbus Day 1992, NASA did begin a limited search. A year later, Congress repealed it at the request of Senator Richard Bryan, a Democrat from Nevada. Following the denial of federal support, SETI’s activities, supported by grants from the nonprofit SETI Institute in Mountain View, California, have since slowed down. Russian entrepreneur Yuri Milner recently created a new initiative called Hacking Listen with a $100 million donation. Dr. Horowitz and others have expanded the study to include what they call “optical SETI,” where they watch the sky for laser flares from distant civilizations.

Dr. Horowitz said that the Cyclops was never built “because by today’s standards it would have been a huge and expensive animal.” Technological advances, such as radios that can listen to billions of radio frequencies at the same time, have changed the rules of the game.

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New large fast telescope in China, also known as “Sky Eye”, was built in part with SETI in mind. Its antenna is located in a crater in Guizhou in southwestern China. The antenna is larger than the famous Arecibo radio telescope in Puerto Rico. Disgracefully collapsed in December 2020.

Now FAST and its observers have gone through their own false alarm tests. SETI astronomers say there will be more.

Those who persist pray that the so-called great silence will not push them away. They say they have always looked for the long term.

“A great silence is not expected,” Horowitz said, not least because only a fraction of the Milky Way’s 200 million stars have been explored. No one ever said that detecting this stream of cosmic radio signals would be easy.

“It may not happen in my lifetime, but it will,” Wertimer said.

“All signals detected by SETI researchers so far are from our own civilization, not another civilization,” Wertheimer said in a series of emails and phone calls. He said the earthlings might have to build telescope on the moon To avoid the growing radioactive contamination on Earth and Interference from constellations of orbiting satellites.

He said that the current time could be a unique window for Earth’s SETI tracking.

“A hundred years ago,” he said, “the sky was clear, but we didn’t know what to do.” “In a hundred years there will be no more paradise.”

Annalize Franke

“Analyst. Excellent bookworm. Entrepreneur. Passionate writer. Award-winning wine ninja. Subtly engaging reader.”

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Pixel 4 gets an update from Google ahead of time



Android 13 Pixel 4 Google atualização beta

Android 13 is being developed at a good pace, Google periodically releases new test versions, as expected. This system is expected in late summer to update Google smartphones first.

Still without a planned and expected release date, now a contingency arose. Unexpectedly, a Pixel 4 user received an update to Android 13, even though it is a beta version.

Google has an open testing program that anyone who wants to try Android 13 can use. It's not limited to just pixels, but has opened it up to several models from other brands so that they can evaluate this version.

What the user of this Pixel 4 did not expect is that their smartphone will receive Android 13 version TP1A.220603.002.A1. Apparently, this is reserved for Google internal testing and should not have been available outside the company.

Even stranger and even more ridiculous is that this user did not register their Pixel 4 in any of the Android 13 tests. Thus, they were far from accessing this or any other version of the new Google system that was not even released. more. .

In the description he provided on various internet channels, the owner of this Pixel 4 said that he had problems with the smartphone from that moment on. The worst of them was even a clear incompatibility with the Play Store. Reinstalling the app and even resetting the Pixel 4 didn't fix the problem.

Even though this seems to be the only known case with Android 13, this is a seemingly normal situation. In previous years and in different versions, there were reports of situations where users of Pixel smartphones inadvertently received updates.

With Android 13 almost ready, Google is accelerating its pace of development. The final version should appear soon, thus paving the way for the expected update, both for the Pixel and for all other smartphones in the Google system.

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Blocks R21



Blocks R21

Portuguese 3D printer startup Blocks will release a new model, the Blocks R21, which is due to hit the market in September. Fortunately, we were able to test the device already in its final version, which showed an impressive evolution compared to the previously tested model. One MKII.

This new printer features an all-aluminum construction, an LCD touch panel that allows you to control all printer settings. Among them is the calibration of the print tray, which, in addition to heating, has a metal coating with a texture that greatly contributes to the adhesion of the filament during printing.

Another important detail is the integration of all the main printing elements in one module, such as a two-block extruder and a hot end. The latter has a threaded screw for quick replacement, which allows you to replace the module with another one with a nozzle that is compatible with a particular type of filament. The variation can be from 0.2 to 1 mm – the hot end supplied with the printer is equipped with a 0.4 mm nozzle. This is to provide better print quality based on filament type, from traditional PLA to ABS, Flex, PETG, nylon, fiberglass, carbon fiber reinforced PET, PLA with metal or wood.

In terms of use, the Blocks R21 couldn’t be simpler and more intuitive thanks to the aforementioned LCD touch screen and a new tray that is easy to calibrate and requires a minimum amount of glue liquid (varnish). The fact that it uses an almost closed rigid construction, together with the integration of all units into a single module, made it feel quieter: it was even the quietest I have tested to date. Blocks R21 is priced to be considered “premium” and is available in a basic version, already with all the accessories you need to get started printing right away. However, we can buy it with an optional connection kit which, while pushing the price up to a less than pleasant €1,800, adds a Wi-Fi controller, webcam and temperature sensor so you can monitor print status remotely.

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Distributor: Blocks

Price: €1575

Data sheet

Print area: 210 x 300 x 250 mm
print speed: 60 mm/s
Connections: USB, SD card, WiFi
Compatibility: Windows, MacOS, Linux
Additionally: power cord, USB cable, USB stick, spatula, tweezers, calibration paper, adhesive spray,
Dimensions: 470 x 350 x 490 mm
Weight: 18 kg

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Learn about the extended RAM feature coming to mobile phones and tablets | Cell



Learn about the extended RAM feature coming to mobile phones and tablets |  Cell

Virtual RAM, also known as RAM Plus – is a memory expansion feature that is increasingly used in cell phones from major manufacturers. brands like Samsung e xiaomi to make the feature available on some smartphones, such as Galaxy devices in the case of the South Korean one, and some models of the POCO, Redmi and Mi series, on the Chinese side. The function uses the free part of the cell’s memory to expand the RAM and thus improve the performance of the device. OUR Apple also recently announced such a feature for ipad.

The iPhone manufacturer revealed the functionality during the presentation of new items iPadOS 16 at the beginning of June. The operating system update will bring for those devices that are equipped with M1 or M2 processors, the replacement of virtual memory. According to Apple, the update will use ipad offer up to 16GB of storage to help run the heaviest apps like phones do android.

Samsung Galaxy A53 — Photo: Disclosure/Samsung

How virtual memory works

Virtual RAM is not native to devices and became available after a software update. That is, everything will depend on how up-to-date the user’s operating system is, and even so, this is a feature that is far from being released to everyone. The available size depends on the smartphone. when Samsungfor example, Galaxy A52S can be used additionally up to 4 GB, but Galaxy A53 you can use up to 8GB more via RAM Plus.

when Applewhich provides additional memory for iPad models only ipad 11″ Pro (3rd generation), ipad 12.9″ Pro (5th gen) and ipad Air 5th generation, equipped with the giant’s own processors, will be able to use this feature. OUR xiaomi more democratic, with more than 30 compatible devices, including Xiaomi Mi 11, Redmi Note 10 Pro 5G, Poco F3 and others.

Apple’s iPadOS 16 combines multiple overlapping windows into a single view – Photo: Handout/Apple

Benefits of using virtual RAM

Among the benefits of enabling virtual RAM is the ability to run multiple applications at the same time without crashing, as the system allocates storage according to the needs of the device – but, of course, within the limit set by the manufacturer. Heavier applications that require more from smartphones can be downloaded and used without delay.

RAM Plus can be accessed in the Samsung Android memory settings – Photo: Reproduction/Katarina Bandeira

Disadvantages of using virtual RAM

Despite the performance benefits, there are some limitations that the user must be aware of before enabling a significant amount of virtual RAM. First, even with the addition of RAM, the performance is not the same as the physical version. It is also not possible to disable this feature on devices that support this feature.

That is, if your phone has 128 GB of internal storage, at least 2 GB will be dedicated to the device’s virtual RAM, which will reduce the space to 126 GB. Also, using this feature to use a heavier application may result in performance degradation of other applications running in the background.

It is important to note that in order to use this function, the mobile phone must have free internal memory, that is, it cannot be occupied by files of any nature or systems. Otherwise, the function cannot be activated. on the site Samsung, the manufacturer itself warns of the limitation “RAM Plus is a technology that uses part of the smartphone’s internal memory as RAM. You must have free space on the internal memory, ”is written in small print on the manufacturer’s website.

Launch of Xiaomi, Mi 11 has sold over 1 million units. — Photo: Publicity/Xiaomi

How to find out the amount of virtual memory on your mobile

for instruments xiaomi, the path is almost the same: Settings > Advanced settings > Memory expansion and enable the function. On devices from both manufacturers, you must restart the cell phone after activating or selecting the amount of virtual RAM to use. When iPadOSYes Appledespite what has been announced, this feature will only be available when the new operating system becomes available for new devices, which should happen in the second half of the year.

with information from Samsung e Apple

Which one is better xiaomi? Take a look at the 3 most powerful cell phones in the video below.

What is better than Xiaomi? Meet the 3 most powerful mobile phones of 2022

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