Keyword: darkmatter

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  • Bringing balance to the universe: New theory could explain missing 95 percent of the cosmos

    12/05/2018 9:02:07 AM PST · by ETL · 89 replies
    Scientists at the University of Oxford may have solved one of the biggest questions in modern physics, with a new paper unifying dark matter and dark energy into a single phenomenon: a fluid which possesses 'negative mass." If you were to push a negative mass, it would accelerate towards you. This astonishing new theory may also prove right a prediction that Einstein made 100 years ago. Our current, widely recognised model of the Universe, called LambdaCDM, tells us nothing about what dark matter and dark energy are like physically. We only know about them because of the gravitational effects they...
  • Discovery of Hotspots Circling Milky Way Black Hole Has Astronomers Excited

    11/21/2018 7:58:43 AM PST · by BenLurkin · 30 replies
    Space.com ^ | November 21, 2018 08:00am ET | Samantha Mathewson,
    Broderick's work builds on earlier research by two teams that studied the galactic center of the Milky Way in near-infrared. This included the work of Reinhard Genzel, an astronomer from the Max Planck Institute for Extraterrestrial Physics in Garching, Germany, as well as researchers Andrea Ghez and Mark Morris of University of California, Los Angeles. At the time, their work revealed that the center of the Milky Way wasn't steady, but instead would drastically brighten about once a day for about 30 or 40 minutes, Broderick said. Researchers think supermassive black holes exist at the center of most, if not...
  • Large, strangely dim galaxy found lurking on far side of Milky Way

    11/13/2018 10:17:10 AM PST · by ETL · 15 replies
    ScienceMag.com ^ | Nov 13, 201 | Adam Mann
    Circling our galaxy is a stealthy giant. Astronomers have discovered a dwarf galaxy, called Antlia 2, that is one-third the size of the Milky Way itself. As big as the Large Magellanic Cloud, the galaxy’s largest companion, Antlia 2 eluded detection until now because it is 10,000 times fainter. Such a strange beast challenges models of galaxy formation and dark matter, the unseen stuff that helps pull galaxies together. “It’s a very odd object and kind of exciting because we don’t know yet how to interpret all of its properties,” says Andrey Kravtsov of The University of Chicago in Illinois,...
  • Signs of Earth's Weird, Elusive 'Dust Moons' Finally Spotted

    11/07/2018 8:30:59 AM PST · by ETL · 17 replies
    Space.com ^ | Oct 31, 2018 | Charles Q. Choi, Space.com Contributor
    Dust clouds that orbit Earth like moons may finally have had their existence confirmed after more than a half-century of controversy, new research finds. In deep space, there are five points where the gravitational pull of Earth and the moon balance each other. Two of these so-called Lagrange points, L4 and L5, form an equal-sided triangle with Earth and the moon, and move around Earth as the moon orbits the planet. Any objects at either L4 or L5 can stay in relatively stable positions there about 239,000 miles (384,000 kilometers) from both Earth and the moon, barring any interference from...
  • Bringing Dark Energy Out into the Light

    10/28/2018 1:28:32 PM PDT · by ETL · 32 replies
    Space.com ^ | Oct 18, 2018 | Paul Sutter, Astrophysicist
    Let's talk about dark energy. We've known for about 20 years that the expansion of our universe is accelerating; every day, our cosmos grows bigger and bigger, doing so faster and faster. It's a subtle effect, and it takes extensive and deep cosmological surveys and studies for scientists to notice it. But multiple independent lines of evidence all point to the same conclusion: accelerating expansion. Astronomers quickly cooked up a cool name for that accelerated expansion: dark energy. But now we’re left with the much harder job of finding a culprit — what's causing it? A universal mistake We use...
  • The Next Big Discovery in Astronomy? We Probably Found It Years Ago...

    06/03/2018 9:18:47 AM PDT · by LibWhacker · 27 replies
    Space.com ^ | 6/3/18 | Eileen Meyer
    The Next Big Discovery in Astronomy? We Probably Found It Years Ago — But Don't Know It Yet By Eileen Meyer, University of Maryland, Baltimore County | June 3, 2018 08:44am ET MORE An artist's illustration of a black hole "eating" a star.Credit: NASA/JPL-Caltech This article was originally published at The Conversation. The publication contributed the article to Space.com's Expert Voices: Op-Ed & Insights. Earlier this year, astronomers stumbled upon a fascinating finding: Thousands of black holes likely exist near the center of our galaxy. The X-ray images that enabled this discovery weren't from some state-of-the-art new telescope. Nor were...
  • "We Truly Don't Know What It Is" --Mystery Milky-Way Spectrum of Light Observed...

    04/18/2018 12:04:23 AM PDT · by LibWhacker · 34 replies
    "We Truly Don't Know What It Is" --Mystery Milky-Way Spectrum of Light Observed 'Not Produced By Any Known Emission' April 17, 2018   "We use special telescopes to catch X-ray light in the sky, and while looking at these X-rays, the telescopes noticed an unexpected feature and captured a spectrum of light, which is not produced by any known atomic emission," said University of Miami astrophysicist Nico Cappelluti. "This emission line is now called the 3.5 kiloelectron volt (keV). One interpretation of this emission line is that it's produced by the decay of dark matter." "This 3.5 keV emission line is...
  • "Hubble confounds cosmology by not finding Dark Matter"

    03/31/2018 4:26:19 AM PDT · by Voption · 64 replies
    The John Batchelor Show ^ | March 31, 2018 | John Batchelor/Robert Zimmerman
    Using the Hubble Space Telescope astronomers have discovered a nearby galaxy that apparently has little or no evidence of dark matter. The unique galaxy, called NGC 1052-DF2, contains at most 1/400th the amount of dark matter that astronomers had expected. The galaxy is as large as our Milky Way, but it had escaped attention because it contains only 1/200th the number of stars.
  • Astrophysicists Claim They Found a 'Galaxy Without Dark Matter'

    03/28/2018 10:45:44 PM PDT · by BenLurkin · 24 replies
    Live Science ^ | March 28, 2018 01:00pm ET | Rafi Letzter
    Here's a problem: The universe acts like it's a lot more massive than it looks. Take galaxies, those giant, spinning masses of stars. The laws of motion and gravity tell us how fast these objects should turn given their bulk. But observations through telescopes show them spinning way faster than we'd expect, as if they were actually much more massive than the stars we can see indicate. Astrophysicists have come up with two main solutions to this problem. Either there's a lot of mass out there in the universe that we can't detect directly, mass scientists call dark matter, or there's no...
  • Astronomers Spot Two Massive Galaxies Surrounded by a Halo of Dark Matter at the Dawn of Time

    12/06/2017 11:31:18 AM PST · by Red Badger · 89 replies
    www.popularmechanics.com ^ | 12/06/2017 | By John Wenz
    Less than a billion years after the Big Bang, two titans speed toward each other. NRAO/AUI/NSF; D. Berry ======================================================================= Just 780 million years after the universe formed in the Big Bang, two galaxies speed to confront each other in a head-on collision that will lead to a merger between the two—and one of them is towing along a clump of dark matter larger than any spotted before. The research paper, published today in Nature, highlights a little-understood era of the universe known as the Epoch of Reionization. This is when the first galaxies came together and lit up the universe...
  • Excess antielectrons aren’t from nearby dead stars, study says

    11/26/2017 8:31:20 PM PST · by ETL · 28 replies
    ScienceNews.com ^ | November 16, 2017 | Emily Conover
    The finding keeps open the possibility that the particles come from dark matter New observations of the whirling cores of dead stars have deepened the mystery behind a glut of antimatter particles raining down on Earth from space. The particles are antielectrons, also known as positrons, and could be a sign of dark matter — the exotic and unidentified culprit that makes up the bulk of the universe’s mass. But more mundane explanations are also plausible: Positrons might be spewed from nearby pulsars, the spinning remnants of exploded stars, for example. But researchers with the High-Altitude Water Cherenkov Observatory, or...
  • Earthbound Antimatter Mystery Deepens After Scientists Rule Out Pulsar Source

    11/17/2017 9:19:32 AM PST · by BenLurkin · 29 replies
    Space.com ^ | November 16, 2017 | Harrison Tasoff,
    The recent finding, detailed in the journal Science today (Nov. 17), concerns positrons, the antimatter complements of electrons. High-energy particles, usually protons, traveling across the galaxy can create pairs of positrons and electrons when they interact with dust and gas in space, study co-author Hao Zhou, at Los Alamos National Lab, told Space.com. In 2008, the space-based PAMELA detector measured unexpectedly high numbers of earthbound positrons. This was about 10 times what they were expecting to see, according to Zhou. ... Zhou's team made detailed measurements of the gamma-rays coming from the direction of two nearby pulsars — Geminga and its companion...
  • The Physicist Who Denies Dark Matter

    05/19/2017 9:59:26 AM PDT · by BenLurkin · 45 replies
    Nautilus ^ | 05/18/2017 | Oded Carmali
    To understand this problem, one needs to wrap one’s head around some celestial rotations. Our planet orbits the sun, which, in turn, orbits the center of the Milky Way galaxy. Inside solar systems, the gravitational pull from the mass of the sun and the speed of the planets are in balance. By Newton’s laws, this is why Mercury, the innermost planet in our solar system, orbits the sun at over 100,000 miles per hour, while the outermost plant, Neptune, is crawling at just over 10,000 miles per hour. Now, you might assume that the same logic would apply to galaxies:...
  • Astronomers capture image of elusive force that connects the universe

    04/13/2017 1:22:16 PM PDT · by heterosupremacist · 66 replies
    http://nypost.com ^ | 04/13/2017 | Lauren Tousignant
    Captured by researchers at the University of Waterloo in Ontario, Canada, the composite image is proof that dark matter acts as a giant intergalactic web that connects galaxies throughout space and time. Their findings were published in Monthly Notices of the Royal Astronomical Society. Dark matter is an invisible force that doesn’t emit or reflect light, and is only detectable through gravity. It makes up around 27 percent of the observable universe and scientists have long predicted that the ghostly substance plays a crucial role in the makeup of our entire universe. “For decades, researchers have been predicting the existence...
  • Researchers capture first 'image' of a dark matter web that connects galaxies

    04/12/2017 11:53:27 AM PDT · by Red Badger · 48 replies
    phys.org ^ | April 12, 2017 | Provided by: Royal Astronomical Society
    Dark matter filaments bridge the space between galaxies in this false colour map. The locations of bright galaxies are shown by the white regions and the presence of a dark matter filament bridging the galaxies is shown in red. Credit: S. Epps & M. Hudson / University of Waterloo ================================================================================================================================ Researchers at the University of Waterloo have been able to capture the first composite image of a dark matter bridge that connects galaxies together. The scientists publish their work in a new paper in Monthly Notices of the Royal Astronomical Society. The composite image, which combines a number of individual...
  • Wikileaks Releases "NightSkies 1.2": Proof CIA Bugs "Factory Fresh" iPhones

    03/23/2017 7:34:38 AM PDT · by Enlightened1 · 63 replies
    Zero Hedge ^ | 03/23/17 | Tyler Durden
    A new WikiLeaks Vault 7 leak titled “Dark Matter” claims that the Central Intelligence Agency has been bugging “factory fresh” iPhones since at least 2008 through suppliers. The documents are expected to be released after a 10 a.m. EDT “press briefing” that WikiLeaks promoted on its Twitter. And here is the full press release from WikiLeaks: Today, March 23rd 2017, WikiLeaks releases Vault 7 "Dark Matter", which contains documentation for several CIA projects that infect Apple Mac Computer firmware (meaning the infection persists even if the operating system is re-installed) developed by the CIA's Embedded Development Branch (EDB). These documents...
  • Dark Matter (new wikileaks dump today - Vault 7)

    03/23/2017 7:23:23 AM PDT · by bigbob · 16 replies
    Wikileaks ^ | 3-23-16 | Wikileaks
    23 March, 2017 Today, March 23rd 2017, WikiLeaks releases Vault 7 "Dark Matter", which contains documentation for several CIA projects that infect Apple Mac Computer firmware (meaning the infection persists even if the operating system is re-installed) developed by the CIA's Embedded Development Branch (EDB). These documents explain the techniques used by CIA to gain 'persistence' on Apple Mac devices, including Macs and iPhones and demonstrate their use of EFI/UEFI and firmware malware. Among others, these documents reveal the "Sonic Screwdriver" project which, as explained by the CIA, is a "mechanism for executing code on peripheral devices while a Mac...
  • WikiLeaks Vault 7 Leak Claims CIA Bugs ‘Factory Fresh’ iPhones

    03/23/2017 8:33:48 AM PDT · by Swordmaker · 33 replies
    Heavy.com ^ | March 23, 2017 | By S.J. Prince
    A new WikiLeaks Vault 7 leak titled “Dark Matter” claims, with unreleased documents, that the Central Intelligence Agency has been bugging “factory fresh” iPhones since at least 2008. WikiLeaks further claims that the CIA has the capability to permanently bug iPhones, even if their operating systems are deleted or replaced.The documents are expected to be released after a 10 a.m. EDT “press briefing” that WikiLeaks promoted on its Twitter. RELEASE: CIA #Vault7 "Dark Matter" https://t.co/pgnfeODXVB pic.twitter.com/vkI16f3vMD— WikiLeaks (@wikileaks) March 23, 2017 Watch a livestream of the Julian Assange led event here. WATCH: WikiLeaks Vault 7 Livestream on CIA ‘Dark Matter’...
  • Towards A New Understanding Of Dark Matter

    03/07/2017 7:29:15 AM PST · by BenLurkin · 8 replies
    Universe Today ^ | 6 Mar , 2017 | Evan Gough
    Dark matter remains largely mysterious, but astrophysicists keep trying to crack open that mystery. Last year’s discovery of gravity waves by the Laser Interferometer Gravitational Wave Observatory (LIGO) may have opened up a new window into the dark matter mystery. Enter what are known as ‘primordial black holes.’ ... Unlike stellar black holes, primordial black holes originated in high density fluctuations of matter during the first moments of the Universe. They can be much larger, or smaller, than stellar black holes. PBHs could be as small as asteroids or as large as 30 solar masses, even larger. They could also...
  • Surprise interaction between dark and ordinary matter found in mini-spiral galaxies

    12/16/2016 7:57:51 PM PST · by Lorianne · 19 replies
    UPI ^ | 15 December 2016 | Brooks Hays
    In a recent survey of mini-spiral galaxies, astronomers found a unexpected relationship between dark and light matter. The relationship is easy to measure yet impossible to explain using the Standard Model of physics. Researchers from Italy's International School for Advanced Studies conducted a statistical analysis of three dozen mini-spiral galaxies. Their work revealed a strong correlation between the organization of dark and regular matter in each galaxy. If, for example, ordinary matter was condensed at the center of a mini-spiral galaxy, so too was dark matter. If the bulk of regular matter was scattered across the outskirts of the galaxy,...