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Keyword: stringtheory

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  • The strongest evidence for a Universe before the Big Bang

    03/30/2023 7:24:41 AM PDT · by Red Badger · 138 replies
    FreeThink ^ | March 29, 2023 | By Ethan Siegel
    The hot Big Bang is often touted as the beginning of the Universe. But there's one piece of evidence we can't ignore that shows otherwise. The notion of the Big Bang goes back nearly 100 years, when the first evidence for the expanding Universe appeared. If the Universe is expanding and cooling today, that implies a past that was smaller, denser, and hotter. In our imaginations, we can extrapolate back to arbitrarily small sizes, high densities, and hot temperatures: all the way to a singularity, where all of the Universe’s matter and energy was condensed in a single point. For...
  • Boffins [Scientists] claim discovery of the first piezoelectric liquid

    03/29/2023 3:24:18 AM PDT · by zeestephen · 13 replies
    The Register (via MSN.com) ^ | 28 March 2023 | Brandon Vigliarolo
    [*All currently known Piezoelectric materials are solids. When the solid is compressed or twisted, it releases an electric charge. If the solid is zapped with electricity, the solid changes shape*] - When the liquids were put in a cylinder and compressed with a piston, both generated electricity proportional to the force applied. Blanchard and Hossain placed their liquids in a lens-shaped container. By zapping it with electricity, Blanchard said they were able to change the focal length of the lens.
  • Physicists Have Manipulated "Quantum Light" For The First Time, in a Huge Breakthrough

    03/23/2023 4:02:24 AM PDT · by zeestephen · 25 replies
    Science Alert (via MSN.com) ^ | 22 March 2023 | Fiona MacDonald
    The new breakthrough has now achieved stimulated emission [laser] and detection for single photons, as well as small groups of photons from a single atom, leading to them becoming strongly correlated – in other words, "quantum light." And that's a huge step forward..."By demonstrating that we can identify and manipulate photon-bound states, we have taken a vital first step towards harnessing quantum light for practical use..."
  • Spooky Alignment of Quasars Across Billions of Light-years — Science Release — ESO1438

    11/25/2014 10:36:03 PM PST · by Swordmaker · 38 replies
    VLT reveals alignments between supermassive black hole axes and large-scale structure New observations with ESO’s Very Large Telescope (VLT) in Chile have revealed alignments over the largest structures ever discovered in the Universe. A European research team has found that the rotation axes of the central supermassive black holes in a sample of quasars are parallel to each other over distances of billions of light-years. The team has also found that the rotation axes of these quasars tend to be aligned with the vast structures in the cosmic web in which they reside.See Full Size Photo Quasars are galaxies with...
  • Unexpected Effect: Nanorippled Graphene Becomes a Powerful Catalyst

    03/17/2023 5:11:40 AM PDT · by Red Badger · 15 replies
    Scitech Daily ^ | MARCH 16, 2023 | By UNIVERSITY OF MANCHESTER
    Graphene Sheet Scientists have found that nanoripples in graphene make it a strong catalyst, even though it was expected to be chemically inert. Their research, published in PNAS, demonstrated that nanoscale corrugations on graphene’s surface accelerate hydrogen splitting as well as the best metallic-based catalysts, and this effect may be present in all 2D materials. *********************************************************************** A team of researchers led by Prof. Andre Geim from the National Graphene Institute (NGI) have discovered that nanoripples in graphene can make it a strong catalyst, contrary to general expectations that the carbon sheet is as chemically inert as the bulk graphite from...
  • JWST Catches Sight of a Rare Star on The Brink of Going Supernova

    03/16/2023 9:04:32 AM PDT · by Red Badger · 16 replies
    Science Alert ^ | 16 March 2023 | By MICHELLE STARR
    JWST's new image of WR 124 and its nebula. (NASA, ESA, CSA, STScI, Webb ERO Production Team) There's scintillating beauty to be found in cosmic death. In a new image from the JWST, the spectacular final throes of a star nearing the end of its life are revealed in all their intricate detail. Located in the constellation Sagittarius, the star WR 124 is what's known as a Wolf-Rayet, which are rarely seen in the Milky Way. That's because only certain stars turn into Wolf-Rayets, and even then their time in that phase is so short; in just a few hundred...
  • 'Time Reflections' Finally Observed by Physicists After Decades of Searching

    03/14/2023 8:15:04 AM PDT · by Red Badger · 50 replies
    Science Alert ^ | 14 March 2023 | By MIKE MCRAE
    Time Reflections Visualization Illustration of the experimental platform used to realize time reflections. (Andrea Alu) Walk through a maze of mirrors, you'll soon come face to face with yourself. Your nose meets your nose, your fingertips touch at their phantom twins, stopped abruptly by a boundary of glass. Most of the time, a reflection needs no explanation. The collision of light with the mirror's surface is almost intuitive, its rays set on a new path through space with the same ease as a ball bouncing off a wall. For over sixty years, however, physicists have considered a subtly different kind...
  • ‘A Bankrupt Concept of Math’: Some Educators Argue Calculus Should Be Dethroned

    03/13/2023 1:30:37 PM PDT · by grundle · 124 replies
    The 74 via Yahoo ^ | March 13, 2023 | Jo Napolitano
    Successful completion of high school calculus has long been an unofficial must-have for those seeking admission to the nation’s top colleges: The course has, for decades, served as a signal to admissions officers that a student’s coursework has been robust. But some in education say it’s time to reconsider this de facto requirement: Many schools — particularly those serving large numbers of Black, Hispanic or low-income students — don’t offer the course. And even when they do, it’s of dubious value, they say. “High school calculus is a complete waste of time and a form of torture,” said Alan Garfinkel,...
  • U.S. scientists unveil "reddmatter" superconductor breakthrough that could revolutionize energy, if true

    03/09/2023 7:52:17 AM PST · by zeestephen · 16 replies
    The Week US (via MSN.com) ^ | 09 March 2023 | Peter Weber
    Scientists at the University of Rochester reported this week that they have taken a big leap toward creating a commercially viable superconductor that operates at room temperature and a low enough level of high pressure to be used in almost any technology that uses electric energy.
  • New Forms of Exotic Superconductivity by Stacking Layers of Graphene

    03/09/2023 1:50:12 AM PST · by upchuck · 12 replies
    SciTechDaily ^ | Mar 9, 2023 | ISTA
    Thanks to Red Badger. Graphene is a strange material. Understanding its properties is both a fundamental question of science and a promising avenue for new technologies. A team of researchers from the Institute of Science and Technology Austria (ISTA) and the Weizmann Institute of Science has studied what happens when they layer four sheets of it on top of each other and how this can lead to new forms of exotic superconductivity. “Multilayered graphene has many promising qualities, ranging from widely tunable band structure and special optical properties to new forms of superconductivity—meaning being able to conduct electrical current without...
  • James Webb Space Telescope spots galaxy from early universe rich in star formation

    03/08/2023 8:02:39 AM PST · by Red Badger · 12 replies
    SPACE.com ^ | March 8, 2023 | By Samantha Mathewson
    'We found this galaxy to be super-chemically abundant, something none of us expected.' A gravitationally lensed view of a ring-shaped slice of the galaxy SPT0418-47, as seen by the ALMA array in Chile. Recent observations by NASA's James Webb Space Telescope reveal that the galaxy has a satellite that's rich in star formation. A gravitationally lensed view of a ring-shaped slice of the galaxy SPT0418-47, as seen by the ALMA array in Chile. Recent observations by NASA's James Webb Space Telescope reveal that the galaxy has a satellite that's rich in star formation. (Image credit: ALMA (ESO/NAOJ/NRAO), Rizzo et al.)...
  • The Physics of UFOs: Eric Weinstein + Hal Puthoff

    03/07/2023 7:52:30 AM PST · by SunkenCiv · 114 replies
    YouTube ^ | February 11, 2022 | Jesse Michels
    [snip] Eric Weinstein is a Managing Director at Thiel Capital, creator of geometric unity, a unified theory in physics, and the intellectual dark web, a loose coalition of intellectuals dedicated to free thought. Hal Puthoff is former CIA, NSA and AATIP (the government's official UFO investigation program). In the 70's, he oversaw Stargate: the government's psychic spy program at Stanford Research Institute. In this conversation, we discuss the physics of UFO's, private aerospace as the keepers of fundamental science and Hal's experience with parapsychology. Please enjoy 🛸👽*** AMERICAN ALCHEMY is an original series hosted by Jesse Michels that explores the...
  • Scientists believe they've found untapped helium reserves

    03/02/2023 7:29:54 AM PST · by Red Badger · 42 replies
    UPI ^ | MARCH 1, 2023 / 11:50 AM | By Daniel J. Graeber
    March 1 (UPI) -- The amount of helium in underground geological formations could satisfy thousands of years of global demand, researchers said in an article published Wednesday in the journal Nature. Like other essential commodities, there are supply-side concerns for helium as a result of Russia's invasion of Ukraine last year. Sanctions and other restrictions mean supplies from Russia's Amur plant, expected to satisfy about 35% of global demand, are no longer available. Researchers from Oxford University, Durham University and the University of Toronto estimate helium is a $6 billion market. The element is used in everything from fiber optics...
  • Wormholes might bend light like black holes do — and that could be the key to finding them

    02/26/2023 1:06:30 AM PST · by zeestephen · 9 replies
    Live Science (via MSN.com) ^ | 25 February 2023 | JoAnna Wendel
    If wormholes exist, they could magnify the light of distant objects by up to 100,000 times — and that could be the key to finding them, according to research published Jan. 19 in the journal Physical Review D.
  • Astronomers shocked to 'discover the impossible' from James Webb Space Telescope images: 'I nearly spit out my coffee'

    02/25/2023 11:25:03 AM PST · by Twotone · 90 replies
    The Blaze ^ | February 23, 2023 | Carlos Garcia
    Scientists say that images from the James Webb Space Telescope may change how they understand the origins of the universe after they discovered "the impossible." The findings were published in the journal "Nature" on Wednesday. Astronomers expected to find "tiny, young, baby galaxies" from the cosmic history documented in the images, but they found something else entirely. The study's lead author, Ivo Labbé, explained how shocked he was when he realized what the images meant. "Little did I know that among the pictures is a small red dot that will shake up our understanding of how the first galaxies formed...
  • For The First Time, Astronomers See Black Holes in Dwarf Galaxies About to Collide

    02/24/2023 11:12:57 AM PST · by Red Badger · 12 replies
    Science Alert ^ | February 24, 2023 | By DAVID NIELD
    Mirabilis, one of the pairs of dwarf galaxies detected. (NASA/CXC/University of Alabama/M. Micic et al./International Gemini Observatory/NOIRLab/NSF/AURA) For the first time, astronomers have spotted evidence of a pair of dwarf galaxies featuring giant black holes on a collision course with each other. In fact, they haven't just found just one pair – they've found two. The first pair of merging dwarf galaxies is in the cluster Abell 133, about 760 million light-years away from Earth, and the other is in the Abell 1758S galaxy cluster, which is about 3.2 billion light-years away. It's hoped that these sightings and further investigations...
  • Scientists Discover Unprecedented ‘Runaway’ Black Hole

    02/23/2023 8:40:40 AM PST · by Twotone · 14 replies
    The Daily Wire ^ | February 22, 2023 | Michael Whittaker
    Astronomers have sighted a supermassive black hole traveling through space that appears to have been ejected from its host galaxy. Researchers observing the dwarf galaxy designated RCP 28, roughly 7.5 billion light years away from our solar system, noticed an aberrant streak of light via the Hubble telescope. The “streak” appears to be a collection of stars being dragged out of their home galaxy by the immense gravitational force of a black hole. The “runaway” black hole is the first of its kind to be observed, and appears to have been ejected from its original galaxy. “We found a thin...
  • "We have made science fiction come true!" Scientists prove particles in a quantum system can be rejuvenated

    02/22/2023 2:19:46 PM PST · by zeestephen · 16 replies
    El Pais USA (via MSN.com) ^ | 21 February 2023 | Raúl Limón
    Imagine you are 40-something and want to go on a date looking like you did 20 years ago. This is impossible in the classical physical world but not in the quantum world, which refers to the subatomic particles that are the foundation for all reality...The team published papers in Physical Review X, Quantum, Arxiv, Physical Review Letters and Optica on theoretical research and experiments proving it's possible to "accelerate, decelerate and reverse the flow of time within arbitrary, even uncontrolled quantum systems."
  • "Runaway'" black hole the size of 20 million suns found speeding through space with a trail of newborn stars behind it

    02/22/2023 2:45:33 AM PST · by zeestephen · 52 replies
    Live Science (via MSN.com) ^ | 21 February 2023 | Robert Lea
    The discovery offers the first observational evidence that supermassive black holes can be ejected from their home galaxies to roam interstellar space...The researchers discovered the runaway black hole as a bright streak of light while they were using the Hubble Space Telescope to observe the dwarf galaxy RCP 28, located about 7.5 billion light-years from Earth.
  • 'Runaway' black hole the size of 20 million suns found speeding through space with a trail of newborn stars behind it

    02/22/2023 6:58:20 AM PST · by logi_cal869 · 7 replies
    Live Science via MSN ^ | 0/21/2023 | Robert Lea
    Astronomers have spotted a runaway supermassive black hole, seemingly ejected from its home galaxy and racing through space with a chain of stars trailing in its wake. - snip - The researchers discovered the runaway black hole as a bright streak of light while they were using the Hubble Space Telescope to observe the dwarf galaxy RCP 28, located about 7.5 billion light-years from Earth. Follow-up observations showed that the streak measures more than 200,000 light-years long — roughly twice the width of the Milky Way — and is thought to be made of compressed gas that is actively forming...