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convection zone

   Also found in: Wikipedia 0.02 sec.
convection zone
A region of turbulent plasma between a star's core and its visible photosphere at the surface, through which energy is transferred by convection. In the convection zone, hot plasma rises, cools as it nears the surface, and falls to be heated and rise again.


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Above lies the convection zone, where heat converts to motion and the bulk of the sun's magnetic field is believed to originate.
Solar magnetism: Memories are made of this by Cowen, R. / Science News
In concert with the SOHO craft, launched 2 years ago, TRACE will track the magnetic fields from the base of the convection zone, deep within the sun, all the way up to the corona.
Space 1998: from the moon to Mars and beyond by Cowen, Ron / Science News
The near-infrared images revealed convection zones within clouds due to rising heat, while the cloud tops appeared fluffier--due to reflected sunlight--in the visible-light photos.
Galileo's quick look at Venus by Science News
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