Uncategorized

  1. Physics

    Galactic data shore up a constant

    Alpha, a constant of nature found to vary in some astrophysical studies, actually holds steady, according to the first survey of galaxies used to evaluate alpha's constancy.

    By Peter Weiss
  2. Physics

    Scales tilt against five-quark particles

    Studies that fail to find purported five-quark particles, or pentaquarks, are stacking up quicker than studies that claim to have found such particles, suggesting that they might not really exist.

    By Peter Weiss
  3. Physics

    Test puts pedal to heavy metal

    Stellar explosions forge heavy elements such as gold more quickly than scientists had predicted, as indicated by the first measurement of the half-life of a rare form of nickel that's a key link in the chain of element formation.