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Keyword: stringtheory

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  • Study: Dark matter does not exist and the universe is 27 billion years old

    03/17/2024 9:14:09 AM PDT · by yesthatjallen · 61 replies
    Earth via MSN ^ | 03 17 2024 | Eric Ralls
    The fabric of the cosmos, as we currently understand it, comprises three primary components: 'normal matter,' 'dark energy,' and 'dark matter.' However, new research is turning this established model on its head. A recent study conducted by the University of Ottawa presents compelling evidence that challenges the traditional model of the universe, suggesting that there may not be a place for dark matter within it. Dark matter, a term used in cosmology, refers to the elusive substance that does not interact with light or electromagnetic fields and is only identifiable through its gravitational effects. Despite its mysterious nature, dark matter...
  • Unexpected Discovery of “Impossible Galaxy” Shatters Astronomical Boundaries

    03/15/2024 12:54:00 PM PDT · by Red Badger · 27 replies
    Scitech Daily ^ | MARCH 13, 2024 | By KIM BAPTISTA, ARIZONA STATE UNIVERSITY
    The unexpected discovery of the dwarf galaxy PEARLSDG, which is isolated and quiescent, challenges established views on galaxy evolution and highlights the capabilities of the James Webb Space Telescope in uncovering cosmic phenomena. (Artist’s concept.) Credit: SciTechDaily.com PEARLSDG, an isolated dwarf galaxy found by the James Webb Space Telescope, defies standard galactic evolution theories by not forming new stars, indicating a need to revise our understanding of galaxies. A team of astronomers, led by Arizona State University Assistant Research Scientist Tim Carleton, has discovered a dwarf galaxy that appeared in James Webb Space Telescope (JWST) imaging that wasn’t the primary...
  • Astronomers Discover Something Strange About The Oldest 'Dead' Galaxy In The Universe

    03/07/2024 9:13:15 AM PST · by Red Badger · 16 replies
    The Debrief ^ | MARCH 7, 2024 | MJ BANIAS
    Astronomers using the James Webb Space Telescope (JWST) have made a groundbreaking discovery: a galaxy that ceased forming new stars over 13 billion years ago, making it the oldest ‘dead’ galaxy ever observed. The galaxy, which existed a mere 700 million years after the Big Bang, is odd by galactic standards. Now, based on recent findings, it’s also challenging our understanding of early galaxy evolution. In research led by Tobias J. Looser and an international team of astronomers, the James Webb Space Telescope (JWST) has discovered an ancient quiescent galaxy. At a redshift of z=7.3, it is the oldest galaxy...
  • How the world will end: Terrifying graphic reveals the gruesome fate of every planet when the Sun dies

    03/02/2024 5:08:19 AM PST · by Libloather · 44 replies
    Daily Mail ^ | 3/02/24 | Wiliam Hunter
    From the AI apocalypse to a full-blown nuclear war, it seems that there is an almost endless list of things that might cause the end of the world. But, if those terrifying fates gest us, there is one doomsday event that Earth can't avoid. A terrifying graphic reveals how the Sun will grow into a vast 'red giant' star, becoming so large that it will be the end of the solar system as we know it. Although this might seem utterly petrifying, you don't need to start worrying just yet. Dr Edward Bloomer, senior astronomer at Royal Observatory Greenwich, said:...
  • Physicists Have Figured Out a Way to Measure Gravity on a Quantum Scale

    02/23/2024 10:11:52 PM PST · by Red Badger · 10 replies
    Science Alert ^ | 24 February 2024 | MICHELLE STARR
    An artist's impression of the experiment. (University of Southampton) ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Acting on a tiny particle levitating in a magnetic trap, physicists have just measured the smallest gravitational pull ever recorded. The particle weighed just 0.43 grams. And the strength of the gravitational force at play was on the scale of attonewtons (10-18 newtons). That's small enough to be right on the verge of the quantum realm, teasing the possibility of finally figuring out how classical physics and quantum mechanics interact. "For a century, scientists have tried and failed to understand how gravity and quantum mechanics work together," says physicist Tim...
  • Yale University To Reinstate Standardized Test Requirement For Admissions

    02/22/2024 5:39:28 AM PST · by JSM_Liberty · 23 replies
    Forbes ^ | Feb 22, 2024,08:04am EST | Michael T. Nietzel
    Yale University will once again require standardized testing for students applying for admission in the fall of 2025. The decision, announced today, ends the test-optional undergraduate admissions process that had been in place at Yale since the pandemic. According to the announcement, the past four years of test-optional admissions had given Yale what it described as “an invaluable opportunity to think deeply about testing policy and to generate new data and analyses. With testing availability now fully restored for prospective applicants around the world, we have reevaluated our policy with the benefit of fresh insights.” Yale is describing its new...
  • Brightest and fastest-growing: astronomers identify record-breaking quasar

    02/21/2024 7:03:26 PM PST · by Red Badger · 8 replies
    ESO ^ | 19 February 2024 | Staff
    Using the European Southern Observatory’s (ESO) Very Large Telescope (VLT), astronomers have characterised a bright quasar, finding it to be not only the brightest of its kind, but also the most luminous object ever observed. Quasars are the bright cores of distant galaxies and they are powered by supermassive black holes. The black hole in this record-breaking quasar is growing in mass by the equivalent of one Sun per day, making it the fastest-growing black hole to date. The black holes powering quasars collect matter from their surroundings in a process so energetic that it emits vast amounts of light....
  • James Webb Space Telescope finds neutron star mergers forge gold in the cosmos: 'It was thrilling'

    02/21/2024 8:26:51 PM PST · by Red Badger · 24 replies
    SPACE.com ^ | 21 FEB 2024 | By Robert Lea
    "This is the first time we've been able to verify that metals heavier than iron and silver were freshly made in front of us." An illustration of two neutron stars colliding and merging to create a kilonova blast. (Image credit: Robin Dienel/Carnegie Institution for Science) Scientists have analyzed an unusually long blast of high-energy radiation, known as a gamma-ray burst (GRB), and determined that it originated from the collision of two ultradense neutron stars. And, importantly, this result helped the team observe a flash of light emanating from the same event that confirms these mergers are the sites that create...
  • Our universe is merging with 'baby universes', causing it to expand, new theoretical study suggests

    02/18/2024 10:39:57 AM PST · by Red Badger · 68 replies
    SPACE.com ^ | 18 February 2024 | By Andrey Feldman
    The universe is expanding faster and faster, but not all scientists agree that dark energy is the cause. Perhaps, instead, our universe keeps colliding with and absorbing smaller 'baby universes,' a new theoretical study suggests. Our universe is expanding at an ever-accelerating rate — a phenomenon that all theories of cosmology agree upon but none can fully explain. Now, a new theoretical study offers an intriguing solution: Perhaps our universe is expanding because it keeps colliding with and absorbing "baby" parallel universes. Studies of the cosmic microwave background, the afterglow of the Big Bang, have revealed that our universe is...
  • String theory nonsense makes comeback

    02/12/2024 7:04:06 AM PST · by SunkenCiv · 40 replies
    YouTube ^ | February 7, 2024 | Sabine Hossenfelder
    I got a lot of questions last week about an article in Quanta Magazine about Dark Dimensions. it's about an idea motivated by string theory that combines large extra dimensions with dark matter. I had a look at the paper.The paper is here: https://arxiv.org/abs/2311.05318The article in quanta magazine is here: https://www.quantamagazine.org/...String theory nonsense makes comeback | 8:12Sabine Hossenfelder | 1.13M subscribers | 147,734 views | February 7, 2024
  • It's Confirmed! Laser Fusion Experiment Hit a Critical Milestone in Power Generation

    02/07/2024 6:58:26 AM PST · by Red Badger · 44 replies
    Science Alert ^ | 06 February 2024 | CLARE WATSON
    (Jacob Long/Lawrence Livermore National Laboratory) In December 2022, scientists at the US National Ignition Facility announced a historic milestone: for the first time, their laser-powered fusion reaction had 'broken even', producing more energy than it consumed. But advances as big as this need to be rigorously checked – and that can take some time. Importantly, a series of papers detailing the experimental design, technological advancements, and results of the initial breakthrough reaction have just passed peer review, meaning researchers not involved in the work have vetted the methods and findings in order to check the sums. "This achievement is the...
  • Scientists Succeed in Producing a Durable “TIME CRYSTAL”

    02/05/2024 9:41:20 AM PST · by Red Badger · 52 replies
    The Debrief ^ | FEBRUARY 2, 2024 | MJ BANIAS
    Researchers at Germany’s TU Dortmund University report that they have developed an ultra-robust time crystal. Their study, published in Nature Physics, offers new insights into the potential applications and the physics governing time crystals, and offers a new method for keeping them stable. Time crystals represent a new phase of matter, first theorized in 2012 by Nobel laureate Frank Wilczek. Unlike traditional crystals, which exhibit repeating patterns in space, time crystals display patterns that repeat in time. This means their atomic structures undergo periodic motion even without external energy, defying the traditional laws of thermodynamics that govern equilibrium in most...
  • Scientists Have Solved This ANTI-GRAVITY Mystery While Confirming New Form of Magnetic Levitation

    01/31/2024 8:18:58 AM PST · by Red Badger · 96 replies
    The Debrief ^ | JANUARY 8, 2024 | TIM MCMILLAN
    In a groundbreaking discovery, scientists have unraveled an anti-gravity mystery that seemingly defied the norms of classical physics, potentially paving the way for revolutionary advancements in magnetic levitation technology. The breakthrough centers on a unique form of magnetic levitation, first demonstrated in 2021 by Turkish scientist Hamdi Ucar, an electronics engineer from Göksal Aeronautics in Turkey. Typically, the setup becomes unstable when you try to balance two repelling magnets to counter gravity. However, in a study featured in the journal Symmetry, Ucar revealed that when positioned close to another swiftly rotating magnet, a magnet can both spin and levitate in...
  • The Universe Is Not Locally Real, and the Physics Nobel Prize Winners Proved It

    10/08/2022 11:31:43 AM PDT · by Cronos · 94 replies
    Scientific American ^ | 6th oct2022 | Daniel Garisto
    One of the more unsettling discoveries in the past half century is that the universe is not locally real. “Real,” meaning that objects have definite properties independent of observation—an apple can be red even when no one is looking; “local” means objects can only be influenced by their surroundings, and any influence cannot travel faster than light. Investigation shows objects are not influenced solely by surroundings and may also lack definite properties prior2 measurement ...pairs of particles are sent off in different directions from a common source, targeted for two observers, Alice and Bob, each stationed at opposite ends of...
  • Pioneering Quantum Physicists Win Nobel Prize in Physics

    10/26/2022 9:51:39 PM PDT · by NoLibZone · 14 replies
    Quantum magazine ^ | Oct 4,2022 | Charles Wood
    Alain Aspect, John Clauser and Anton Zeilinger have won the 2022 Nobel Prize in Physics for groundbreaking experiments with entangled particles. The physicists Alain Aspect, John Clauser and Anton Zeilinger have won the 2022 Nobel Prize in Physics for experiments that proved the profoundly strange quantum nature of reality. Their experiments collectively established the existence of a bizarre quantum phenomenon known as entanglement, where two widely separated particles appear to share information despite having no conceivable way of communicating. Entanglement lay at the heart of a fiery clash in the 1930s between physics titans Albert Einstein on the one hand...
  • At Just 54 ATOMS, Scientists Made History by Tying the World's Smallest Knot, and They Have No Idea How They Did It

    01/24/2024 1:06:11 PM PST · by Red Badger · 36 replies
    The Debrief ^ | JANUARY 23, 2024 | MICAH HANKS
    An international team of chemists has set a new world record for tying the world’s smallest knot, which they say consists of only 54 atoms. Remarkably, researchers involved with the achievement say it happened by accident, and are unable to account for how it occurred. Chemists Zhiwen Li, Jingjing Zhang, Gao Li with the Chinese Academy of Sciences’ Dalian Institute of Chemical Physics, and research colleague Richard J. Puddephatt with the University of Western Ontario, Canada, were attempting an entirely different process in the lab when the record breaking discovery was made. Their achievement is described in a study that...
  • We've Been Misreading a Major Law of Physics For The Last 300 Years

    01/22/2024 8:49:07 AM PST · by Red Badger · 57 replies
    Science Alert ^ | 19 January 2024 | CLARE WATSON
    When Isaac Newton inscribed onto parchment his now-famed laws of motion in 1687, he could have only hoped we'd be discussing them three centuries later. Writing in Latin, Newton outlined three universal principles describing how the motion of objects is governed in our Universe, which have been translated, transcribed, discussed and debated at length. But according to a philosopher of language and mathematics, we might have been interpreting Newton's precise wording of his first law of motion slightly wrong all along. Virginia Tech philosopher Daniel Hoek wanted to "set the record straight" after discovering what he describes as a "clumsy...
  • The Big Bang never happened – so what did?...Cosmic evolution without mythology [Part 1]

    01/12/2024 7:02:41 PM PST · by Red Badger · 40 replies
    Asia Times ^ | DECEMBER 3, 2023 | By ERIC LERNER
    Whirlpool Galaxy, photographed by the Webb Space Telescope. Photo: NASA ESA Webb / A Adamo ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Introduction by Asia Times Science Editor Jonathan Tennenbaum In September Eric Lerner created a sensation with his Asia Times article, “Saying goodbye to the Big Bang,” arguing that the Big Bang theory is contradicted by an overwhelming mass of astronomical evidence accumulated over decades, including recent data from NASA’s James Webb Space Telescope. Eric Lerner ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ The data forced even a pair of hitherto staunch advocates of the Big Bang, the well-known astrophysicists Adam Frank and Marcelo Gleiser, to admit that something must be...
  • Fusion from filaments on Earth and in the cosmos...Part 2 of ‘The Big Bang never happened – so what did?’

    01/12/2024 7:02:52 PM PST · by Red Badger · 3 replies
    Asia Times ^ | DECEMBER 11, 2023 | By ERIC LERNER
    The Orion: A molecular cloud shows cosmic filamentary structures where stars are being born. Image: ESA / Herschel / Ph. André, D Polychroni, A. Roy, V Könyves, N Schneider for the Gould Belt survey Key Program ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ In the first part of this series, we saw that electromagnetic processes in plasmas – electrically conducting gases – could, over trillions of years, produce the giant filaments that we see today as the largest structures in the universe. This happened without a Big Bang, without dark energy or dark matter, based on processes that we observe here on Earth in the laboratory...
  • Shooting the way to fusion energy...Super high-velocity projectiles might ultimately beat lasers in the race to achieve practical fusion energy

    01/18/2024 7:25:14 PM PST · by Red Badger · 38 replies
    Asia Times ^ | DECEMBER 18, 2023 | By JONATHAN TENNENBAUM
    Looking down the barrel of the First Light Fusion’s “Big Friendly Gun” – a two-stage gas gun that's used to generate fusion reactions by the impact of a high-velocity projectile on a specially-designed target. Photo: First Light Fusion In my discussion (published starting here) with Paul Methven, head of Britain’s STEP program to build a first electricity-producing fusion power plant, Methven stressed that the program is open to more than one technological option. While STEP is betting mainly on the spherical tokamak, it is supporting the formation of a “fusion cluster” that will include private fusion companies pursuing entirely different...