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E.g., 06/19/2018
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Your search has returned 136 articles:
  • News

    If real, dark fusion could help demystify this physics puzzle

    Fusion may have a dark side. A shadowy hypothetical process called “dark fusion” could be occurring throughout the cosmos, a new study suggests.

    The standard type of fusion occurs when two atomic nuclei unite to form a new element, releasing energy in the process. “This is why the sun shines,” says physicist Sam McDermott of Fermilab in Batavia, Ill. A similar process — dark fusion —...

    06/06/2018 - 09:00 Particle Physics, Astronomy
  • News

    Mysterious neutrino surplus hints at the existence of new particles

    Pip-squeak particles called neutrinos are dishing out more than scientists had bargained for.

    A particle detector has spotted a puzzling abundance of the lightweight subatomic particles and their antimatter partners, antineutrinos, physicists report May 30 at arXiv.org. The finding mirrors a neutrino excess found more than two decades ago. And that match has researchers wondering if a...

    06/01/2018 - 15:45 Particle Physics
  • News in Brief

    Two-faced star reveals a pulsar’s surprising bulk

    A two-faced star just helped weigh an extra-massive pulsar.

    The star takes about four hours to orbit its companion, a fast-spinning stellar corpse called a pulsar that’s about 10,000 light-years from Earth. That means the pair’s orbital dance is tight enough that the star always shows the same face to the pulsar, similar to how the moon is oriented to Earth.

    Radiation from the...

    05/31/2018 - 09:00 Astronomy, Particle Physics
  • News in Brief

    Dark matter particles elude scientists in the biggest search of its kind

    The largest particle detector of its kind has failed to turn up any hints of dark matter, despite searching for about a year.

    Known as XENON1T, the experiment is designed to detect elusive dark matter particles, which are thought to make up most of the matter in the cosmos. Physicists don’t know what dark matter is. One of the most popular explanations is a particle called a WIMP, short...

    05/28/2018 - 05:00 Particle Physics
  • News

    The inside of a proton endures more pressure than anything else we’ve seen

    Pity the protons: Those little particles are under a lot of pressure. Protons’ innards are squeezed harder than any other substance we have measured, a new study finds.

    “It’s really the highest pressure we have ever seen,” says physicist Volker Burkert, a coauthor of the study, published in the May 17 Nature. Protons break the pressure record set by neutron stars, the incredibly dense...

    05/16/2018 - 13:18 Particle Physics
  • News in Brief

    The proton’s weak side is just as feeble as physicists thought

    Protons are no one-trick ponies. Although famous for their positive electric charge, the particles also carry an analogous, lesser-known charge, called the weak charge. Now, physicists have made the most precise measurement of the proton’s underdog attribute, members of the Q-weak experiment report in the May 10 Nature.

    The weak charge dictates how the proton responds to the weak nuclear...

    05/09/2018 - 13:00 Particle Physics
  • Letters to the Editor

    Readers puzzled by particle physics and a papal decree

    Particle particulars

    Physicists are ramping up their search for neutrinoless double beta decay, which could help explain why there is more matter in the universe than antimatter, Emily Conover reported in “The quest to identify the nature of the neutrino’s alter ego is heating up” (SN: 3/17/18, p. 14).

    Reader F L Stiles wondered how this decay could explain a surplus of matter. “It...

    05/02/2018 - 07:00 Particle Physics, Genetics
  • 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