cosmic ray

  • Cosmic splashes

    When a camera is peppered by cosmic rays, the blips can appear in images.

    ESOSometimes, high-energy cosmic rays can hit a camera as it is observing the universe. These can be from distant exo...

    Space January 3, 2017
  • How cosmic rays may nourish and nurture alien life

    The discovery of a dark-dwelling bacterium prompted one astrobiologist to think: could similar mi...

    Could microbes that munch on molecules broken down by cosmic rays live underground on planets throughout the universe...

    Space October 23, 2016
  • Cosmic rays reveal thunderstorm secrets

    Clues come from particles floating around the cosmos.

    Ever since Benjamin Franklin flew his kite in a thunderstorm and extracted a spark from the other end we’ve known tha...

    Physics May 11, 2015
  • Comets paint Mercury black

    The riddle of Mercury’s dark complexion is almost solved. James Mitchell Crow explains.

    NASA’s Messenger probe to Mercury is heading for a violent end. In a few weeks from now, when its fuel tanks empty, M...

    Space April 13, 2015
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