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  1. Astronomy

    Solar cannibalism

    Billion-ton clouds of charged gas hurled from the sun can overtake and eat their slower-moving gaseous brethren, complicating predictions of when and if one of these clouds might strike Earth.

    By Ron Cowen
  2. Astronomy

    Raging sun provides earthly light show

    At the tumultous peak of its 11-year activity cycle, the sun is spitting out X-ray flares and belching giant clouds of high-energy particles at a furious rate.

    By Ron Cowen
  3. Astronomy

    Gamma-ray bursts reveal distant galaxies

    A gamma-ray burst recorded Feb. 22, one of the brightest ever detected, is proving to be the strongest evidence so far that these cosmic flashbulbs originate in star-forming regions of distant galaxies and are generated by the explosive death of massive stars.