

News
NASA’s Hubble Space Telescope first discovered a rogue black hole
NASA’s Hubble robotic observatory in low Earth orbit has provided the first direct evidence of a lone black hole drifting through interstellar space by measuring its mass and precise location for the first time. Until now, the masses of black holes have been determined indirectly, relying on their interaction with companions in binary systems or with stars in the cores of galaxies.
Hubble made observations of the Sagittarius-Carina spiral arm of the Milky Way, which made it possible to detect a black hole passing through this arm at a distance of about 5 thousand light-years from Earth. At the time of its formation millions of years ago, this black hole was pushed by a supernova explosion due to an asymmetric release of gravitational waves, after which it went on a long flight through the entire galaxy. “Black holes roaming our galaxy are born from rare monstrous explosions of massive stars that make up less than one thousandth of the entire stellar population of the Milky Way, they are at least 20 times more massive than our Sun. These stars explode as supernovae, and the remnants of their cores collapse under the influence of gravity, shrink and turn into black holes. Since the explosion does not turn out to be perfectly symmetrical, the black hole can experience a push and fly due to recoil through the entire galaxy. ”describes the appearance of NASA’s rogue black holes.
Hubble is unable to photograph a black hole directly, as it absorbs all the light falling on it, however, the powerful gravity of these objects distorts the surrounding space, and the light coming from the background stars is bent and amplified in places when the black hole passes in front of them, which gives astronomers the opportunity to record its presence. This effect is called the microlensing effect and can be used to measure the mass of a rogue black hole.
Hubble observed the passage of a black hole in front of the stars for 270 days, but then it took scientists another six years to process all the data. Researchers now believe that it is a black hole, but the possibility remains that the object is a neutron star. The estimated mass of an invisible compact object is between 1.6 and 4.4 solar masses. If it ends up in the upper part of this mass range, then it should be considered a black hole, otherwise it will be just a neutron star. According to astronomers, the object still has a fairly large mass and moves through the Milky Way at a speed of over 160 thousand km / h.

Electric Cars
“A car that everyone can afford.” Chery Arrizo 5 WS for 9.5 thousand dollars has already appeared at dealers in China

Dealers in China began receiving the Chery Arrizo 5 WS sedan. The Chinese resource Autohome calls it “a car that everyone can afford.” And the point here, of course, is the price: you can buy a car for 69,900 yuan – that’s about 9.5 thousand dollars. Interestingly, there is no talk of any manual gearbox – the engine works in conjunction with a variator.
Under the hood of the Chery Arrizo 5 WS is a simple 1.5-liter naturally aspirated engine with a power of 1109 hp. It is clear that the dynamics are sluggish, but the consumption is relatively low – 6.6 l/100 km based on measurements using the WLTC method.
The car received a regular dashboard with traditional speedometer and tachometer scales and a small on-board computer screen between them. But at the same time, the climate control is touch-sensitive, there is a media system with a fairly large screen, cruise control, a tire pressure monitoring system, an electromechanical handbrake, and the interior is leather.
News
Redmi K70 will reach the level of premium flagships. It will have a 2K screen, Snapdragon 8 Gen 3, a metal side frame and a glass back panel

Insider Digital Chat Station spoke not only about the future of One Plus Ace 3, but also about Redmi K70, the premiere of which is expected this year. Judging by the informant’s words, this model will turn into a premium flagship – both in terms of characteristics and finishing materials.
The Redmi K70 will have much less plastic compared to its predecessor: the side frame will be metal, and the back panel will be glass. At least, this is how the prototype of the smartphone is designed.
Redmi K70 will have a screen with a frame of minimal thickness. This will be a locally produced (Chinese) display with a 2K resolution. The hardware platform will be based on the Snapdragon 8 Gen 3 SoC. The battery capacity will be 5000 mAh and will support 100 W charging. The main camera will have a 50-megapixel main sensor and will have optical image stabilization. A second sensor with a telephoto lens will provide at least 3x zoom.
According to the insider, Redmi K70, OnePlus Ace 3 and Relame GT Neo 6 will have a metal side frame. Apparently, these models will compete with each other.
Previously, Digital Chat Station was the first to accurately report the specifications and release dates of Redmi K50 and Xiaomi 12, as well as Xiaomi 13.
News
Dust and radio waves have helped astronomers discover a connection between two key characteristics of galaxies

At the center of almost every known galaxy, including our Milky Way, is a supermassive black hole—black holes with the mass of millions or billions of our Sun. In some galaxies, there is also a lot of material at the center that feeds this supermassive black hole, making it “active.”
The most powerful type of such active galaxies are called quasars – they are among the brightest objects in the Universe. Most quasars appear “blue” due to a disk of material around them that feeds a supermassive black hole that radiates brightly in the optical and ultraviolet ranges.
However, astronomers have discovered that a significant portion of these quasars appear “red.” Understanding the physics of these red quasars requires spectroscopic measurements to analyze the quasar’s light in different wavelength ranges. The spectrum of a quasar can indicate the amount of dust in the space surrounding the central region. Observing radio emissions from quasars can also reveal evidence of a central supermassive black hole.
The study used spectroscopic observations from the DESI instrument, which was used to measure the amount of dust in a sample of about 35,000 quasars and relate the data to observed radio emission. The scientists found that DESI was able to observe much redder (dusty) quasars compared to similar previous spectroscopic studies, such as the Sloan Digital Sky Survey (SDSS). And also “red” quasars much more often have stronger radio emission compared to typical “blue” quasars.
Dr Fossett said: “This study puts many pieces of the red quasar puzzle together and links the dust in the quasar to its radio emissions. I think this is the strongest evidence yet that ‘red’ quasars are a key element in the evolution of galaxies.”
The connection between quasar reddening and radio emission is likely due to powerful outbursts of gas from the supermassive black hole colliding with surrounding dust, generating waves and radio emission. These ejections eventually carry away all the dust and gas from the central region of the galaxy, revealing the blue quasar and leading to a weakening of the radio emission.
This process fits with the increasingly popular idea that “red” quasars are a younger phase in the evolution of galaxies. Therefore, they quasars could be extremely important for understanding how galaxies evolve over time.
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