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The Sun

<< 8/12 < > The energy produced through fusion in the Sun's core powers the Sun and produces all of the heat and light that we receive here on Earth. The process by which energy escapes from the Sun is very complex. Since we can't see inside Sun, most of what astronomers know about this subject comes from combining theoretical models of the Sun's interior with observational facts such as the Sun's mass, surface temperature, and luminosity (total amount of energy output from the surface). SOHO/MDI, SOHO/LASCO (ESA & NASA) SOHO is a project of international cooperation between ESA and NASA.

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