Wow my brain is tired just thinking about all the thinking all these geniuses do!
Gassho, Tokan (satlah)
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Well, not to be overshadowed by Webb, old Hubble can still show us a thing or two ...
Soon, the handless and legless will reach and walk ...Hubble Space Telescope Captures a Spectacular Star-Studded Skyfield
This spectacular star-studded image shows the heart of the globular cluster NGC 6638 in the constellation Sagittarius. Captured by the NASA/ESA Hubble Space Telescope, this star-strewn observation highlights the density of stars at the heart of globular clusters, which are stable, tightly bound clusters of tens of thousands to millions of stars. ... Since it is almost impossible to clearly distinguish the stars in globular clusters with ground-based telescopes, Hubble revolutionized the study of globular clusters. ... Now, with the NASA/ESA/CSA James Webb Space Telescope, we will improve our knowledge of globular clusters by peering into those globular clusters that are currently obscured by dust. Webb will primarily observe at infrared wavelengths, which are less affected by the gas and dust surrounding newborn stars. This will allow astronomers to inspect star clusters that are freshly formed, providing insights into stellar populations before they have had a chance to evolve.
https://scitechdaily.com/hubble-spac...dded-skyfield/
A human brain of synapses builds synapses faster than synapses ...A pioneering project to develop advanced pressure sensors for use in robotic systems could transform prosthetics and robotic limbs.
The innovative research project aspires to develop sensors that provide enhanced capabilities to robots, helping improve their motor skills and dexterity, through the use of highly accurate pressure sensors that provide haptic feedback and distributed touch. It is led by the University of the West of Scotland (UWS), Integrated Graphene Ltd, and supported by the Scottish Research Partnership in Engineering (SRPe) and the National Manufacturing Institute for Scotland (NMIS) Industry Doctorate Programme in Advanced Manufacturing. ... Made from 3D graphene foam, which offers unique properties when put under mechanical stress, the sensors use a piezoresistive approach. This means that when the material is put under pressure it dynamically changes its electric resistance, easily detecting and adapting to the range of pressure required, from light to heavy.
https://scitechdaily.com/advanced-ne...robotic-limbs/
I thought that a "blazar" was a sports jacket that my dad had!?MIT’s New Analog Synapse Is 1 Million Times Faster Than the Synapses in the Human Brain
New Hardware Delivers Faster Computation for Artificial Intelligence, With Much Less Energy
The amount of time, effort, and money needed to train ever-more-complex neural network models is soaring as researchers push the limits of machine learning. Analog deep learning, a new branch of artificial intelligence, promises quicker processing with just a fraction of the energy use. Programmable resistors are the key building blocks in analog deep learning, just as transistors are the core elements for constructing digital processors. By repeating arrays of programmable resistors in complex layers, scientists can create a network of analog artificial “neurons” and “synapses” that execute computations just like a digital neural network. This network can then be trained to achieve complex AI tasks such as natural language processing and image recognition.
... “Once you have an analog processor, you will no longer be training networks everyone else is working on. You will be training networks with unprecedented complexities that no one else can afford to, and therefore vastly outperform them all. In other words, this is not a faster car, this is a spacecraft,” adds lead author and MIT postdoc Murat Onen. ... This new electrolyte enabled a programmable protonic resistor that is a million times faster than their previous device and can operate effectively at room temperature, which is important for incorporating it into computing hardware.
Thanks to the insulating properties of PSG, almost no electric current passes through the material as protons move. This makes the device extremely energy efficient, Onen adds.https://scitechdaily.com/mits-new-an...e-human-brain/
Gassho, JFor the first time, researchers reveal the origin of neutrinos, elementary particles that reach our planet from the depths of the Universe.
Highly energetic and difficult to detect, neutrinos travel billions of light years before reaching Earth. Although it is known that these elementary particles come from the depths of our Universe, their precise origin is still a mystery. An international research team, led by the University of Würzburg and the University of Geneva (UNIGE), is shedding light on one aspect of this enigma: neutrinos are thought to be born in blazars, galactic nuclei fed by supermassive black holes. These results were published on July 14 in the journal Astrophysical Journal Letters.
https://scitechdaily.com/neutrino-fa...-our-universe/
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Life extending life ...
World's first HIV-positive to HIV-positive heart transplant performed at NYC hospital
A New York City hospital performed the world's first HIV-positive to HIV-positive heart transplant.
The patient, a woman in her 60s, suffered from advanced heart failure and received the donation, along with a simultaneous kidney transplant, in early Spring at Montefiore Health System in the Bronx, according to a news release.
Dr. Ulrich P. Jorde, with the Division of Cardiology at Montefiore and a professor of medicine at Albert Einstein College of Medicine, called the procedure a "milestone in the history of organ donation."
... Montefiore is one of 25 centers in the U.S. eligible to offer the procedure after it met surgical benchmarks and outcomes set by the Organ Procurement and Transplantation Network, according to the news release.
“This was a complicated case and a true multidisciplinary effort by cardiology, surgery, nephrology, infectious disease, critical care and immunology,” said Dr. Omar Saeed, the woman's cardiologist.
"Making this option available to people living with HIV expands the pool of donors and means more people, with or without HIV, will have quicker access to a lifesaving organ," Saeed said. "To say we are proud of what this means for our patients and the medical community at large, is an understatement."
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Better than spiders ...
Forever young, beautiful and scandal-free: The rise of South Korea's virtual influencers
She's got more than 130,000 followers on Instagram, where she posts photos of her globetrotting adventures. Her makeup is always impeccable, her clothes look straight off the runway. She sings, dances and models -- and none of it is real.
Rozy is a South Korean "virtual influencer," a digitally rendered human so realistic she is often mistaken for flesh and blood.
"Are you a real person?" one of her Instagram fans asks. "Are you an AI? Or a robot?"
According to the Seoul-based company that created her, Rozy is a blend of all three who straddles the real and virtual worlds.
She is "able to do everything that humans cannot ... in the most human-like form," Sidus Studio X says on its website.
... The "virtual human" industry is booming, and with it a whole new economy in which the influencers of the future are never-aging, scandal-free and digitally flawless -- sparking alarm among some in a country already obsessed with unobtainable beauty standards.
How virtual influencers work
The CGI (computer-generated imagery) technology behind Rozy isn't new. It is ubiquitous in today's entertainment industry, where artists use it to craft realistic nonhuman characters in movies, computer games and music videos.
But it has only recently been used to make influencers.
Sometimes, Sidus Studio X creates an image of Rozy from head to toe using the technology, an approach that works well for her Instagram images. Other times it superimposes her head onto the body of a human model -- when she models clothing, for instance.
https://us.cnn.com/style/article/sou...dst/index.html
Gassho, J
stlahLeave a comment:
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This is just creepy!
... but surprisingly practical for use ... the Necrobots ...
TRIGGER WARNING: If you do not care for spiders ... especially revived dead ones ...
... and a small but interesting invention ... less yucky ...
Gassho, JMIT Engineers Develop Ultrasound Stickers That Can See Inside the Body
Ultrasound imaging currently requires bulky and specialized equipment available only in hospitals and doctor’s offices. However, a new design developed by MIT engineers might make the technology as wearable and accessible as buying Band-Aids at the drugstore. The engineers presented the design for the new ultrasound sticker in a paper published on July 28 in the journal Science. The stamp-sized device sticks to skin and can provide continuous ultrasound imaging of internal organs for 48 hours.
STLahLast edited by Jundo; 07-31-2022, 08:05 AM.Leave a comment:
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Where (maybe) life began ...
... and then maybe some such life could exist on Mars, or elsewhere in the cosmos ...Primordial Soup: Scientists Discover New “Origins of Life” Chemical Reactions
The reaction generates the building blocks of proteins and DNA: amino acids and nucleic acids
Four billion years ago, the Earth looked very different than it does today. It was devoid of life and covered by a vast ocean. Over the course of millions of years, life emerged in that primordial soup. For a long time, researchers have theorized how molecules came together to spark this transition. Now, scientists at Scripps Research have discovered a new set of chemical reactions that use ammonia, cyanide, and carbon dioxide—all thought to be common on the early Earth—to generate amino acids and nucleic acids, the building blocks of proteins and DNA. “We’ve come up with a new paradigm to explain this shift from prebiotic to biotic chemistry,” says Ramanarayanan Krishnamurthy, PhD, and an associate professor of chemistry at Scripps Research. “We think the kind of reactions we’ve described are probably what could have happened on early Earth.” Krishnamurthy is the lead author of the new paper that was published in the journal Nature Chemistry on July 28, 2022.
... “We were expecting it to be quite difficult to figure this out, and it turned out to be even simpler than we had imagined,” says Krishnamurthy. “If you mix only the keto acid, cyanide, and ammonia, it just sits there. As soon as you add carbon dioxide, even trace amounts, the reaction picks up speed.”
Because the new reaction is relatively similar to what occurs inside cells today—except for being driven by cyanide instead of a protein—it seems more likely to be the source of early life, rather than drastically different reactions, the scientists say. The research also helps bring together two sides of a long-standing debate about the importance of carbon dioxide to early life, concluding that carbon dioxide was key, but only in combination with other molecules.
https://scitechdaily.com/primordial-...cal-reactions/
Scientists Discover Blueprint for Life Forms on Mars
Genomic analyses of microbes from Canada’s Arctic provide insight into life forms that could survive on Mars.
Under the permafrost of Lost Hammer Spring in Canada’s High Arctic is an extremely salty, very cold, and almost oxygen-free environment that is most similar to certain regions on Mars. So, if you want to understand more about the types of life forms that could once have existed – or may still exist – on Mars, this is a fantastic place to look.
... In a recent paper in The ISME Journal, the researchers show for the first time, that microbial communities discovered living in Canada’s High Arctic, in conditions corresponding to those on Mars, can survive by eating and breathing simple inorganic compounds of the type that have been detected on Mars (such as methane, sulfate, sulfide, carbon dioxide, and carbon monoxide). ...
Lost Hammer Spring, in Nunavut in Canada’s High Arctic, is one of the saltiest and coldest terrestrial springs discovered to date. The water which travels up through 600 meters (2000 feet) of permafrost to the surface is extremely salty (~24% salinity), perennially at sub-zero temperatures (~−5 °C/23 °F), and contains almost no oxygen (<1ppm dissolved oxygen). The extremely high salt concentrations keep the Lost Hammer spring from freezing, allowing it to maintain a liquid water habitat even at sub-zero temperatures. These conditions are analogous to those found in certain regions of Mars, where widespread salt deposits and possible cold salt springs have been observed. While previous research has shown evidence of microbes in this kind of Mars-like environment – this is one of the very few studies to find microbes alive and active.
...“The microbes we found and described at Lost Hammer Spring are surprising, because, unlike other microorganisms, they don’t depend on organic material or oxygen to live,” adds Whyte. “Instead, they survive by eating and breathing simple inorganic compounds such as methane, sulfides, sulfate, carbon monoxide, and carbon dioxide, all of which are found on Mars. They can also fix carbon dioxide and nitrogen gasses from the atmosphere, all of which makes them highly adapted to both surviving and thriving in very extreme environments on Earth and beyond.” ...
https://scitechdaily.com/scientists-...forms-on-mars/
Gassho, J
StlahLast edited by Jundo; 07-30-2022, 01:49 PM.Leave a comment:
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More tiny technology ...
Stanford-Developed Millirobot Swims in Your Body and Delivers Medicine to Places That Need It
... biomedical researchers have only lately started looking into methods to treat more complex medical problems like cancer or cardiovascular disease more effectively using targeted drug delivery.
The millirobot is a potential development in this developing field of biomedicine. With their ability to crawl, spin, and swim into tight locations on their mission to explore inner workings or distribute medications, these fingertip-sized robots are set to become the future lifesavers in medicine. Renee Zhao, a mechanical engineer who leads research in this field at Stanford University, is developing a number of millirobot designs simultaneously, including a magnetic crawling robot that was recently seen worming its way through a stomach on the cover of Science Advances. Her robots can self-select various locomotive states and navigate obstacles within the body because they are powered by magnetic fields, which allow for continuous motion and can be applied instantaneously to produce torque. Zhao’s team has discovered a way to propel a robot across the body at distances ten times its length in a single jump simply by changing the magnetic field’s direction and strength.
... If this work goes Zhao’s way, her robots won’t just provide a handy way to effectively dispense medicine but could also be used to carry instruments or cameras into the body, changing how doctors examine patients. The team is also working on using ultrasound imaging to track where robots go, eliminating any need to cut open organs. ...
https://scitechdaily.com/stanford-de...-that-need-it/
A picture of the origami millirobot that can move by spinning. This robot waits to deliver a high-concentration medicament until it reaches the target, as opposed to pills that must be ingested or liquids that must be injected.Leave a comment:
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Personally, I believe that only technologies like these can be the future hope of humankind. I will be posting something about that very soon in the "ECODHARMA" discussion ...
Gassho, JDNA Nano-Device Injection Found To Be Safe for Medical Use
The ability to create DNA structures for use in biomedical applications like creating vaccinations or medication delivery systems has been made possible by advances in nanotechnology, but a recent study in mice looks into the safety of the technology.
Scientists can construct a variety of tiny devices with complicated structures that might be implanted in the body to transport medications or carry out other duties using a method called DNA Origami (DO), which involves folding complementary strands of DNA into double helixes repeatedly. However, due to the fact that this technology is still in its infancy, there is disagreement among experts as to whether nanostructures could cause dangerous immune responses or be toxic in other ways in animal systems.
... “DNA is unbelievable in terms of construction and how it’s able to be manipulated and designed to form nano-robots in a very coordinated manner,” said Christopher Lucas, lead author of the study and a research scientist in mechanical and aerospace engineering at Ohio State. “We believe this technology, which has an incredible amount of potential, can be used to diagnose, treat and prevent disease.” ... As for what’s next, since they’ve shown the technology isn’t toxic to mice, the team wants to start loading the devices up with chemotherapy drugs and begin learning how to use the devices to effectively target cancer cells in animals. “We’re just scratching the surface,” said Castro. “We’re revealing a whole new set of interesting questions that we can dig deeper into.” ...
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Hopefully the right section. I would like to point this article out:
A profound thing for ethical questions, in my opinion.In a study published on Tuesday, a team of researchers argue that these animals have a certain biological mechanism that indicates they may indeed have a subjective experience of pain.
Gassho,
Artien
SatLeave a comment:
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I will have that with marinara ...
(I think the graphic is so cool!)
The Ultimate Fate of a Star Shredded by a Black Hole: Spaghettified at 22 Million Miles per Hour
In 2019, astronomers observed the closest example to date of a star that was shredded, or “spaghettified,” after approaching too close to a massive black hole. ... That tidal disruption of a sun-like star by a black hole 1 million times more massive than itself took place 215 million light years from Earth. Fortunately, this was the first such event bright enough that astronomers from the University of California, Berkeley, could examine the optical light from the stellar death, specifically the light’s polarization, to learn more about what happened after the star was ripped apart, Their observations on October 8, 2019, suggest that much of the star’s material was blown away at high speed — up to 10,000 kilometers per second (22 million miles per hour) — and formed a spherical cloud of gas that blocked most of the high-energy emissions produced as the black hole devoured the remainder of the star.
https://scitechdaily.com/the-ultimat...iles-per-hour/
This animation depicts a star experiencing spaghettification as it’s sucked in by a supermassive black hole during a ‘tidal disruption event’. In a new study, done with the help of ESO’s Very Large Telescope and ESO’s New Technology Telescope, a team of astronomers found that when a black hole devours a star, it can launch a powerful blast of material outwards
Gassho, J
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A new economic theory for the origin of hierarchy, government, then cities, empire and all that followed ...
Cereal ... not roots and tubers ...
A good theory, with predictive power, that eliminates the need to posit (still undetected and unconfirmed) "Dark Matter" ...- The research sheds new light on the mechanisms by which the adoption of agriculture led to complex hierarchies and states.
- By theoretical arguments and empirical analysis, it challenges the conventional “productivity theory” which holds that regional differences in land productivity explain regional disparities in the development of hierarchies and states.
- Scientists find that it was not an increase in food production that led to complex hierarchies and states, but rather the transition to reliance on easily portable cereals.
- The primary finding is that the key factor in state development is the suitability of land to cereal farming and not to root and tuber crops.
A fascinating, short video explains:
But, to make sure, the world's most sensitive Dark Matter detector is just coming online ...Dark Matter May Not Exist: These Physicists Favor of a New Theory of Gravity
Using Newton’s laws of physics, we can model the motions of planets in the Solar System quite accurately. However, in the early 1970s, scientists discovered that this didn’t work for disc galaxies – stars at their outer edges, far from the gravitational force of all the matter at their center – were moving much faster than predicted by Newton’s theory.
As a result, physicists proposed that an invisible substance called “dark matter” was providing extra gravitational pull, causing the stars to speed up – a theory that’s become widely accepted. However, in a recent review my colleagues and I suggest that observations across a vast range of scales are much better explained in an alternative theory of gravity called Milgromian dynamics or Mond – requiring no invisible matter. It was first proposed by Israeli physicist Mordehai Milgrom in 1982.
Mond’s primary postulate is that when gravity becomes very weak, as it does near the edge of galaxies, it starts behaving differently from Newtonian physics. In this way, it is possible to explain why stars, planets, and gas in the outskirts of over 150 galaxies rotate faster than expected based on just their visible mass. However, Mond doesn’t merely explain such rotation curves, in many cases, it predicts them.
https://scitechdaily.com/dark-matter...ry-of-gravity/
An innovative and uniquely sensitive dark matter detector – the LUX-ZEPLIN (LZ) experiment – has passed a check-out phase of startup operations and delivered first results. LZ is located deep below the Black Hills of South Dakota in the Sanford Underground Research Facility (SURF) and is led by the DOE’s Lawrence Berkeley National Laboratory (Berkeley Lab).
... While dark matter particles have never actually been detected, they may not be true for much longer. The countdown may have begun already with results from LZ’s first 60 “live days” of testing. These data were collected over a three-and-a-half-month period of initial operations beginning at the end of December. This duration was long enough to confirm that all aspects of the detector were functioning properly. ... Tucked away about a mile underground at SURF in Lead, South Dakota, LUX-ZEPLIN is designed to capture dark matter in the form of weakly interacting massive particles (WIMPs). The experiment is underground to protect it from cosmic radiation at the surface that could drown out dark matter signals.
Gassho, J
STLah
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NASA shares teaser for Webb telescope's first image release
Get ready to see some awe-inspiring views of the universe as we've never seen it before.
The James Webb Space Telescope will release its first high-resolution color images on July 12, one of which "is the deepest image of our universe that has ever been taken," according to NASA Administrator Bill Nelson.
The space observatory, which launched in December, will be able to peer inside the atmospheres of exoplanets and observe some of the first galaxies created after the universe began by viewing them through infrared light, which is invisible to the human eye.
... The first five cosmic targets of Webb were shared by NASA on Friday, providing a teaser for what we can expect to see in the image release. The targets were selected by an international committee, including members from NASA, the European Space Agency, the Canadian Space Agency and the Space Telescope Science Institute in Baltimore.
One of the targets is the Carina Nebula, located 7,600 light-years away. This stellar nursery, where stars are born, is one of the largest and brightest nebulae in the sky and is home to many stars much more massive than our sun.
Additionally, the first full-color spectrum of an exoplanet, known as WASP-96b, will be shared on Tuesday. The spectrum will include different wavelengths of light that could reveal new information about the planet located 1,150 light-years from Earth, such as whether it has an atmosphere. The giant gas planet, which was discovered in 2014 and has half the mass of Jupiter, completes an orbit around its star every 3.4 days.
The third target is the Southern Ring Nebula, also called the "Eight-Burst," which is 2,000 light-years away from Earth. This large planetary nebula includes an expanding cloud of gas around a dying star.
Stephan's Quintet, also expected in the release, will reveal the way galaxies interact with one another. This compact galaxy group, first discovered in 1787, is located 290 million light-years away in the constellation Pegasus. Four of the five galaxies in the group "are locked in a cosmic dance of repeated close encounters," according to a NASA statement.
The final target is SMACS 0723, where a massive group of galaxy clusters act as a magnifying glass for the objects behind them. Called gravitational lensing, this will create Webb's first deep field view of incredibly old and distant, faint galaxies. It will be the deepest humans have ever looked into the universe.
https://us.cnn.com/2022/07/08/world/...scn/index.html
Gassho, J
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andKey Building Blocks for Life Discovered in Cloud Near Center of Our Galaxy
Nitriles, a class of organic molecules with a cyano group (a carbon atom bound with a triple unsaturated bond to a nitrogen atom) are typically toxic. But paradoxically, they are also a key precursor for molecules essential for life on Earth, such as ribonucleotides, composed of the nucleobases or ‘letters’ A, U, C, and G joined to a ribose and phosphate group, which together make up RNA. Now, a team of scientists from Spain, Japan, Chile, Italy, and the United States show that a wide range of nitriles occurs in interstellar space within the molecular cloud G+0.693-0.027, which is located near the center of the Milky Way galaxy.“Here we show that the chemistry that takes place in the interstellar medium is able to efficiently form multiple nitriles, which are key molecular precursors of the ‘RNA World’ scenario”
The End of the Cosmic Dawn: Settling a Two-Decade Debate - Astronomers determine the time when all the neutral hydrogen gas between galaxies produced by the Big Bang became fully ionized.
A group of astronomers has robustly timed the end of the epoch of reionization of the neutral hydrogen gas to approximately 1.1 billion years after the Big Bang. Reionization began when the first generation of stars formed after the cosmic “dark ages,” a long period when the Universe was filled with neutral gas alone without any sources of light. The new finding settles a debate that lasted for two decades and follows from the radiation signatures of 67 quasars with imprints of the hydrogen gas the light passed through before it reached Earth. Pinpointing the end of this “cosmic dawn” will help identify the ionizing sources: the first stars and galaxies.
https://scitechdaily.com/the-end-of-...decade-debate/
Schematic representation of the view into cosmic history provided by the bright light of distant quasars. Observing with a telescope (bottom left) allows us to gain information about the so-called reionization epoch (Leave a comment:
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New meaning to "ordering the liver and kidney pie" ...
It is mostly economics that keeps us hooked on plastics ... I throw away so much plastic each day ...A Newly Discovered Type of Stem Cell Could Allow Scientists To Make Organs in a Dish
Imagine being able to restore damaged organ tissue. Because stem cells have the incredible ability to create the cells of organs such as the liver, pancreas, and intestine, that is what stem cell research is aiming to do.
For many years, researchers have worked to duplicate the process by which embryonic stem cells develop into organs and other parts of the body. However, despite several attempts, it has proven to be incredibly challenging to get lab-grown cells to mature correctly. However, recent research from the University of Copenhagen reveals that they could have missed a crucial step and perhaps another kind of stem cell. ...
The study focused on pluripotent stem cells and endoderm extra-embryonic stem cells. Extra-embryonic endoderm cells are a new stem cell line identified by the same research team a few years ago. They help the gastrointestinal organs by acting as key support cells that supply membranes, nourishment for the membranes, and other functions. “We have identified an alternative route that so-called extra-embryonic cells can use to make intestinal organs in the embryo. We then took our extra-embryonic endoderm stem cells and developed them into intestinal organ-like structures in the dish.”
“But until the very recent past, people assumed these cells helped the embryo to develop, and then they’re gone. That they do not have anything to do with your body. So in this paper, we discovered that if we steer these support cells through this new alternative route, they would actually form organoid structures,” says Joshua Brickman on the findings, which were published in the journal Nature Cell Biology.
...
https://scitechdaily.com/a-newly-dis...ans-in-a-dish/
Gassho, JNew Bioplastic Breaks Down Into Recyclable Components Upon Command
... Biomass is a sustainable, often dirt-cheap raw resource that is gaining popularity in the creation of high-performance plastics. However, bio-based plastics have the same issue of inadequate recycling. Plastics must be consistently stable while in use, with no possibility of early degradation. Recycling should ideally be upcycling rather than downcycling. The created building blocks should be convertible to another high-quality material. These should ideally be monomers that can be polymerized again to make similarly high-performance polymers. ... To meet this challenge, an interdisciplinary team of researchers from the United states—Jayaraman Sivaguru at the Center for Photochemical Sciences, Bowling Green State University in Bowling Green, Ohio, and Mukund P. Sibi and Dean C. Webster at North Dakota State University in Fargo—have chosen bio-based plastics for which degradation can be triggered by irradiation with light. They were able to develop crosslinked polymers that contain building blocks in their backbone based on vanillin. Vanillin can be produced from materials such as lignin, which is a byproduct of cellulose production.
The vanillin derivative developed by the team absorbs light at 300 nm and enters into an excited state. This leads to a chemical reaction that triggers the degradation of the polymer. Because this wavelength is not contained in the spectrum of sunlight that reaches the earth, unplanned degradation is avoided. The researchers were able to recover 60% of the monomers, which could be polymerized again with no loss of quality.
https://scitechdaily.com/new-bioplas...-upon-command/
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For comparison, the earth is rotating at 1670 km/h at the equator, our earth is moving around our sun at 1676 km/h, and our whole galaxy is moving around the center of our Milky Way galaxy at 788,000Km/h, about:
A newly discovered star only takes four years to travel around the black hole at the center of our Milky Way.
Astronomers have discovered the fastest known star, which travels around a black hole in record time. The star, S4716, orbits Sagittarius A*, the black hole in the center of our galaxy, in four years and reaches a speed of around 8,000 kilometers per second (5,000 miles per second) which is about 30 million kilometers per hour (18 million miles per hour).
S4716 comes as close as 100 AU (astronomical unit) to the black hole – a small distance by astronomical standards. One AU is the approximate mean distance from the Earth to the Sun and corresponds to 149,597,871 kilometers (92,955,807 miles). The study was conducted by researchers at the University of Cologne and Masaryk University in Brno (Czech Republic) and published on July 5, 2022, in The Astrophysical Journal.
In the area near the black hole at the center of our galaxy is a densely packed cluster of stars. This cluster, called the S cluster, is home to well over a hundred stars that differ in their brightness and mass. S stars move particularly fast.
... Moreover, the discovery sheds new light on the origin and evolution of the orbit of fast-moving stars in the heart of the Milky Way. “The short-period, compact orbit of S4716 is quite puzzling,” Michael Zajacek, an astrophysicist at Masaryk University in Brno who was involved in the study, said. “Stars cannot form so easily near the black hole. S4716 had to move inwards, for example by approaching other stars and objects in the S cluster, which caused its orbit to shrink significantly,” he added.
https://youtu.be/HMI9em_NylI
tars in the S cluster orbit the black hole at the center of our galaxy at great speed. S4716 is the fastest.Leave a comment:
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