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E.g., 12/09/2018
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Your search has returned 163 articles:
  • News

    A controversial sighting of dark matter is looking even shakier

    For years, some physicists have rowed against the tide, controversially claiming that they’ve found the universe’s elusive dark matter, despite mounting evidence to the contrary. A new experiment makes that upstream paddling even more of a challenge.

    Observations of the cosmos indicate that an invisible, unknown type of subatomic particle must pervade the universe. The extra mass this...

    12/05/2018 - 13:00 Particle Physics
  • News in Brief

    The Large Hadron Collider is shutting down for 2 years

    The world’s most powerful particle accelerator has gone quiet. Particles took their last spin around the Large Hadron Collider on December 3 before scientists shut the machine down for two years of upgrades.

    Located at the particle physics laboratory CERN in Geneva, the accelerator has smashed together approximately 16 million billion protons since 2015, when it reached its current...

    12/03/2018 - 13:39 Particle Physics
  • News

    Physicists finally calculated where the proton’s mass comes from

    A proton’s mass is more than just the sum of its parts. And now scientists know just what accounts for the subatomic particle’s heft.

    Protons are made up of even smaller particles called quarks, so you might expect that simply adding up the quarks’ masses should give you the proton’s mass. However, that sum is much too small to explain the proton’s bulk. And new, detailed calculations...

    11/26/2018 - 06:00 Particle Physics
  • Reviews & Previews

    Why a chemistry teacher started a science board game company

    A physicist, a gamer and two editors walk into a bar. No, this isn’t the setup for some joke. After work one night, a few Science News staffers tried out a new board game, Subatomic. This deck-building game combines chemistry and particle physics for an enjoyable — and educational — time.

    Subatomic is simple to grasp: Players use quark and photon cards to build protons, neutrons and...

    11/25/2018 - 09:00 Particle Physics, Chemistry, Science & Society
  • News

    Nuclear ‘knots’ could unravel the mysteries of atoms

    Knotlike structures called skyrmions might help scientists untangle the inner workings of atomic nuclei, a new study suggests.

    A skyrmion is a tiny disturbance in a substance, a swirling pattern that, like a knot, is difficult to undo. In the 1960s, nuclear physicist Tony Skyrme suggested that these structures — since named after him — could represent protons and neutrons within a...

    11/20/2018 - 06:00 Particle Physics
  • News in Brief

    Physicists measured Earth’s mass using neutrinos for the first time

    Puny particles have given scientists a glimpse inside the Earth.

    For the first time, physicists have measured the planet’s mass using neutrinos, minuscule subatomic particles that can pass straight through the entire planet. Researchers also used the particles to probe the Earth’s innards, studying how the planet’s density varies from crust to core.

    Typically, scientists determine...

    11/05/2018 - 11:00 Particle Physics, Earth
  • News

    What the electron’s near-perfect roundness means for new physics

    Electrons are still almost perfectly round, a new measurement shows. A more squished shape could hint at the presence of never-before-seen subatomic particles, so the result stymies the search for new physics.

    The electron gets its shape from the way that positive and negative charges are distributed inside the particle. The best theory for how particles behave, called the standard model...

    10/17/2018 - 13:00 Particle Physics
  • News

    The universe’s continued existence implies extra dimensions are tiny

    This could be the way the world ends.

    First, a pair of cosmic protons smash together at unimaginable speeds. The tremendous energy of their crash would create a tiny, ephemeral black hole, so small that it would last just a fraction of a second before evaporating.

    Where the black hole just was, a bubble of space with entirely different laws of physics than the universe we inhabit...

    10/05/2018 - 16:34 Cosmology, Particle Physics
  • Science Ticker

    Physicist Leon Lederman, renowned for his subatomic particle work, has died

    Leon Lederman, a Nobel Prize–winning particle physicist who lifted back the curtain to the subatomic world, died on October 3 at the age of 96.

    His work revealed the existence of multiple new elementary particles — with names like the muon neutrino and the bottom quark — showing that the realm of the infinitesimal was more complex than previously thought. The muon neutrino discovery...

    10/03/2018 - 17:17 Particle Physics, Science & Society
  • News

    Hints of weird particles from space may defy physicists’ standard model

    Dangling from a balloon high above Antarctica, a particle detector has spotted something that standard physics is at a loss to explain.

    Two unusual signals seen by the detector, known as the Antarctic Impulsive Transient Antenna, or ANITA, can’t be attributed to any known particles, a team of physicists at Penn State reports online September 25 at arXiv.org. The result hints at the...

    09/28/2018 - 13:49 Particle Physics