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October 8, 2008 2:37:25 AM CDT

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Stories related to: magnetic field

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4 Stories

  • July 2008

    • Mercury Is Shrinking

      Los Angeles Times  |  Jul 3, 08 6:35 PM CDT

      Mercury Is Shrinking

      (Newser) - The planet Mercury is shrinking, the LA Times reports. Data from NASA’s Mercury Messenger spacecraft reveal that the planet’s diameter has shrunk by a mile over its history, probably because its core is cooling. Messenger flew in for a close-up in January, and scientists are now piecing together the new information and re-evaluating some long-held beliefs about the planet. More »

      Tags

      NASA  • Earth  • planet  • solar system  • scientist  • Mercury  • magnetic field  • molten rock

  • May 2008
  • February 2008

    • Solar Lull May Trigger Ice Age

      Popular Mechanics  |  Feb 14, 08 2:56 PM CST

      Solar Lull May Trigger Ice Age

      (Newser) - Solar activity, which usually runs in 11-year cycles, has been so sluggish of late that space weathermen are worried we might be entering a mini-ice age. They expected to see sunspot activity pick up about last March, to peak in 2012; if the sun stays this sluggish for another year or two, it could trigger a prolonged period of massive snowfall and severe cold across the Northern Hemisphere, Popular Mechanics reports. More »

      Tags

      climate change  • global warming  • space  • greenhouse gases  • weather  • astronomy  • sun  • magnetic field

  • December 2007

    • Über-Precise Atomic Clocks Are Half-Past a Revolution

      Wired  |  Dec 13, 07 11:38 AM CST

      Über-Precise Atomic Clocks Are Half-Past a Revolution

      (Newser) - Forget the Swiss—the world's best clocks sit in a Colorado lab where a team of scientists is shaping them into über-precise gadgets with broad-reaching implications on medicine, navigation, and surveillance. The National Institute of Standards and Technology has built a clock the size of a grain of rice so sensitive that it can detect the magnetic field of a mouse's heartbeats, reports Wired. More »

      Tags

      physics  • clock  • magnetic field  • National Institute of Standards and Technology

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