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A Cool Solar Core?

A Cool Solar Core?


Date: 24 April 1998
Satellite: SOHO
Depicts: Solar Interior
Copyright: See below

Concentric layers in a cutaway image show oddities in the speed of sound in the deep interior of the Sun, as gauged by two instruments on the SOHO spacecraft. MDI/SOI measures vertical motions due to sound waves reverberating through the Sun, at a million points on the visible surface. VIRGO detects the solar oscillations by rhythmic variations in the Sun's brightness.
Last Update: 1 September 2019
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