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E.g., 04/22/2018
E.g., 04/22/2018
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  • Gray Rybka
  • galaxy NGC1052–DF2
Your search has returned 129 articles:
  • News

    The search for mysterious dark matter underdogs steps up

    Scientists playing peekaboo with dark matter have entered a new stage of the game.

    For the first time, physicists are snooping on some of the likeliest hiding places for hypothetical subatomic particles called axions, which could make up dark matter. So far, no traces of the particles have been found, scientists with the Axion Dark Matter Experiment, ADMX, report April 9 in Physical...

    04/09/2018 - 11:00 Particle Physics, Cosmology
  • News

    Dark matter is MIA in this strange galaxy

    MISSING: Dark matter.

    Mass: About 60 billion suns’ worth.

    Location: The galaxy NGC1052–DF2, about 65 million light-years from Earth.

    An unusual galaxy is surprisingly lacking in dark matter, scientists report March 28 in Nature.

    In typical galaxies, normal matter is swamped by dark matter, an unidentified invisible substance that makes up most of the matter in the...

    03/28/2018 - 13:00 Astronomy, Particle Physics, Cosmology
  • Letters to the Editor

    Readers muse about memory, magnetic monopoles and more

    Memory lane

    Inspired by flatworm memory experiments from the 1950s, researchers are on the hunt for the elusive engram — the physical mark that a memory leaves on the brain — Laura Sanders reported in “Somewhere in the brain is a storage device for memories” (SN: 2/3/18, p. 22).

    Readers flooded Science News with their thoughts and questions on the topic.

    Elizabeth Elliott...

    03/09/2018 - 10:20 Neuroscience, Animals, Particle Physics
  • News

    The quest to identify the nature of the neutrino’s alter ego is heating up

    Galaxies, stars, planets and life, all are formed from one essential substance: matter.

    But the abundance of matter is one of the biggest unsolved mysteries of physics. The Big Bang, 13.8 billion years ago, spawned equal amounts of matter and its bizarro twin, antimatter. Matter and antimatter partners annihilate when they meet, so an even stephen universe would have ended up full of...

    02/26/2018 - 07:00 Particle Physics
  • News

    Universes with no weak force might still have stars and life

    Not all fundamental forces are created equal. An alternate universe that lacks the weak nuclear force — one of the four fundamental forces that govern all matter in our universe — could still form galaxies, stars, planets and perhaps life, according to calculations published online January 18 at arXiv.org.

    Scientists have long thought that our universe wouldn’t exist, or at least wouldn’...

    01/30/2018 - 07:00 Astronomy, Cosmology, Particle Physics
  • News

    Clumps of dark matter could be lurking undetected in our galaxy

    Clumps of dark matter may be sailing through the Milky Way and other galaxies.

    Typically thought to form featureless blobs surrounding entire galaxies, dark matter could also collapse into smaller clumps — similar to normal matter condensing into stars and planets — a new study proposes. Thousands of collapsed dark clumps could constitute 10 percent of the Milky Way’s dark matter,...

    01/26/2018 - 09:00 Particle Physics, Cosmology
  • News

    Mysterious high-energy particles could come from black hole jets

    It’s three for the price of one. A trio of mysterious high-energy particles could all have the same source: active black holes embedded in galaxy clusters, researchers suggest January 22 in Nature Physics.

    Scientists have been unable to figure out the origins of the three types of particles — gamma rays that give a background glow to the universe, cosmic neutrinos and ultrahigh energy...

    01/22/2018 - 15:48 Astronomy, Particle Physics
  • News

    Magnets with a single pole are still giving physicists the slip

    Magnetic poles are seemingly inseparable: Slice a magnet in half, and you get two smaller magnets, each with its own north and south poles. But exotic magnetic particles that flout this rule may be lurking undetected, some physicists suspect.

    The hunt is in full swing for these hypothetical particles known as magnetic monopoles — which possess a lone north or south pole. Now, two groups...

    01/09/2018 - 13:00 Particle Physics
  • News

    Excess antielectrons aren’t from nearby dead stars, study says

    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...

    11/16/2017 - 14:19 Particle Physics
  • Letters to the Editor

    Readers question photons colliding, black sea snakes and more

    Brain boost

    It’s possible that therapies such as external brain stimulation and neurofeedback, as well as some drugs, may one day boost brain flexibility. A new line of research suggests flexibility is important for learning, Laura Sanders reported in “Learning takes brain acrobatics” (SN: 9/16/17, p. 22).

    Online reader Glenn wondered if drugs for Parkinson’s disease and Huntington’s...

    10/18/2017 - 12:15 Particle Physics, Animals, Neuroscience