Photo taken on Oct. 6, 2020 shows the announcement of the winners of the 2020 Nobel Prize in Physics in Stockholm, Sweden. Mike Wehner has reported on technology and video games for the past decade, covering breaking news and trends in VR, wearables, smartphones, and future tech.
“The surprise for us is that this structure is as big as the Sloan Great Wall and twice as close, and remained unnoticed, being hidden in an obscured sector of the southern sky,” Dr. Pomarède said in an email.
Einstein predicted in 1915, in his general theory of relativity, that space and time could be warped by the force of gravity. It brings humanity a step closer to solving the mysteries of the most energetic particles in nature, according to Frank Schroeder, assistant professor at the Bartol Research Institute in UD's Department of Physics and Astronomy, who was involved in the study with the support of the University of Delaware Research Foundation. It would be impossible to withdraw one’s finger without tearing it apart. All quotes delayed a minimum of 15 minutes.
Neither your address nor the recipient's address will be used for any other purpose. Particles smaller than an atom hurtle through the universe nearly at the speed of light, blasted into space from something, somewhere, in the cosmos. The starry core of our spiral Milky Way galaxy, in an infrared image from NASA Spitzer Space Telescope. Features of the Energy Spectrum of Cosmic Rays above 2.5×1018 eV Using the Pierre Auger Observatory, Physical Review Letters (2020). The galaxies in the wall cannot be seen, but Dr. Pomarède and his colleagues were able to observe their gravitational effects by assembling data from telescopes around the world. Previously, scientists thought these ultra-high-energy cosmic ray particles were mostly protons of hydrogen, but this latest analysis confirms that the particles have a mix of nuclei—some heavier than oxygen or helium, such as silicon and iron, for example. Researchers examined a wealth of data and wrote a paper in 2019 detailing their findings.
By Jennifer Leman. This year’s awards are taking place under the long shadow of the COVID-19 pandemic that has curtailed much of the usual festivities surrounding the prizes. Hubble reveals secrets of the early universe, with images that show primordial stars developed far earlier than previously thought. Through this latest analysis, we can further corroborate our earlier indications that ultra-high-energy cosmic rays are not just protons of hydrogen, but also a mix of nuclei from heavier elements, and this composition changes with energy.". On the largest scales, cosmologists attest, the universe should be expanding smoothly, and the galaxies should be evenly distributed. Why? The new wall joins a host of other cosmographic features: arrangements of galaxies, or a lack of them, that astronomers have come to know and love over the last few decades, with names like the Great Wall, the Sloan Great Wall, the Hercules-Corona Borealis Great Wall and the Bootes Void. "Obviously, it's pretty slight," Coleman said of the spectral kink. He was flabbergasted by the news: “I cried a little bit.”. The South Pole Wall, as it is known, consists of thousands of galaxies — beehives of trillions of stars and dark worlds, as well as dust and gas — aligned in a curtain arcing across at least 700 million light-years of space. The entire region shown spans about 1.3 billion light-years; our Milky Way galaxy, barely 100,000 light-years across, is located in the center of the image, where the red and blue arrows originate. â, 010020070750000000000000011102121394227701. In between are vast deserts of darkness called voids. You can unsubscribe at any time and we'll never share your details to third parties. Ghez - only the fourth woman to be awarded the Physics prize after Marie Curie in 1903, Maria Goeppert-Mayer in 1963 and Donna Strickland in 2018 - said she hoped it would inspire others to enter the field. The new paper was based on measurements, performed by Dr. Tully and his colleagues, of the distances of 18,000 galaxies as far away as 600 million light-years. But the collaboration's measurement is so robust and precise that a number of other theoretical models for where ultra-high-energy cosmic rays are coming from can now be eliminated, while other pathways can be pursued with more vigor. It's part of the intrigue, which still pushes our understanding to the new world," she said. “One might wonder how such a large and not-so-distant structure remained unnoticed,” Dr. Pomarède mused in a statement issued by his university.
STOCKHOLM/BERLIN (Reuters) - Three scientists who unravelled some of the deep mysteries of black holes, the awe-inspiring pockets of the universe where space and time cease to exist, have won the 2020 Nobel Prize in Physics.
googletag.cmd.push(function() { googletag.display('div-gpt-ad-1449240174198-2'); }); A scientific collaboration of the Pierre Auger Observatory, including researchers from the University of Delaware, has measured the most powerful of these particles—ultra-high-energy cosmic rays—with unprecedented precision. Plotted on the curving graph representing the cosmic-ray energy spectrum, you can see the kink—a steep, flattened section—between the area referred to by scientists as "the ankle," and the beginning point of the graph, called "the toe.". Asked about the moment of discovery, Ghez said: “The first thing is doubt.”. “You have to prove to yourself that what you are really seeing is what you think you are seeing. "Roger Penrose showed that the general theory of relativity leads to the formation of black holes. Jan 5, 2020 - Learning about the latest discoveries in Space and looking at faboulous pictures makes me appreciate Earth even more. DOI: 10.1103/PhysRevD.102.062005. or, by University of Delaware. The new spectral feature, a kink in the cosmic-ray energy spectrum at about 13 quintillion electron volts, represents more than points plotted on a graph. and Terms of Use. But on smaller, more local scales, the universe appears lumpy and gnarled. We do not guarantee individual replies due to extremely high volume of correspondence. “We are like swimmers attempting to swim upstream but being carried downstream faster.”. These particles may be coming from something we don't even know.". Click here to sign in with He also performed detailed studies to ensure that this new inflection point was real and not an artifact of the detector. One of the things that is so cool about the Hubble Space Telescope — and other cosmos-gazing hardware that scientists use to scan the skies — is that it’s capable of gathering so much data during its observations that sometimes new discoveries are made months or even years after the images were first collected. It is so massive that it perturbs the local expansion of the universe. 10 deals you don’t want to miss on Saturday: 3M N95 masks, 20% off Instant Pot killer, $22 headphones, rare Purell deal, more, I can’t stop watching this thrilling new Netflix original series, and you’ve never even heard of it, Betelgeuse is 25 percent closer than scientists thought, If you bought any of these disposable wipes, throw them away immediately, Two huge chunks of space junk almost collided over Earth, These are the only 8 states where coronavirus numbers are still low, Hurry: Amazon has $3 KN95 masks that beat 3M N95 masks, according to NIOSH, Did you pre-order an iPhone 12?
See here for a complete list of exchanges and delays. Active galactic nuclei (AGN) and starburst galaxies are now in the running as potential sources. And galaxies beyond the wall are moving outward more slowly than they otherwise should be, reined in by the gravitational drag of the wall. “There is hardly room in the volume for anything bigger!” Dr. Tully said in an email. The entire conglomeration is behind the Milky Way, in what astronomers quaintly call the zone of avoidance. “A major goal in cosmology is to explain this motion,” Dr. Tully said in a series of emails. Ghez noted that it was first "doubt and excitement, a combination of things" that drove her in her researches. Your feedback will go directly to Science X editors. The visible universe of stars and galaxies, cosmologists like to say, is like snow on mountaintops or lights on dark, distant Christmas trees. The research is published in Physical Review Letters and Physics Review D. "Since cosmic rays were discovered 100 years ago, the longstanding question has been, what accelerates these particles?" “Don’t get it too early - that’s my advice.”. Most recently, Mike served as Tech Editor at The Daily Dot, and has been featured in USA Today, Time.com, and countless other web and print outlets. “We’d have to anticipate that our view of the filament is clipped; that it extends beyond our survey horizon.”. Yet he did not actually believe in black holes, and finding a way to prove their existence baffled scientists for another 50 years. “Just like in the movies, a voice said: ‘This is Stockholm’,” the 68-year-old astrophysicist told Reuters Television in his cluttered office on the outskirts of Munich. "I guess we are running out of parts of the anatomy to call it," he said, joking. Reinhard Genzel and Andrea Ghez discovered that an invisible and extremely heavy object governs the orbits of stars at the center of our galaxy. But these exotic objects still pose many questions that beg for answers and motivate future research.". (Photo by Wei Xuechao/Xinhua), "The discoveries of this year's laureates have broken new ground in the study of compact and supermassive objects. But don’t bother trying to see it. Collectively, these instruments measure the energy that an ultrahigh-energy cosmic ray particle releases in the atmosphere and provide an indirect evaluation of its mass.
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