Describe the technology that allows us to see beneath the surface of the sun

It lies hidden beneath the surface of the sun." Fortunately, SDO can look down there, too. The technique is called helioseismic imaging. By monitoring the sun's vibrating surface, SDO can probe the stellar interior in much the same way that geologists use seismic waves from earthquakes to probe inside Earth.

Explanation:

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"It lies hidden beneath the surface of the sun." Fortunately, SDO can look down there, too. The technique is called helioseismic imaging. By monitoring the sun's vibrating surface, SDO can probe the stellar interior in much the same way that geologists use seismic waves from earthquakes to probe inside Earth.

source from NASA SCIENCE

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