Total Solar Irradiance (IMAGE)

NASA/Goddard Space Flight Center

Total Solar Irradiance

Caption

This image shows total solar irradiance (shown in color) over the past three solar cycles since 1978 adjusted to a ground-based cryogenic instrument funded by NASA in collaboration with the National Institute of Standards and Technology (NIST).

Credit

Greg Kopp, LASP, University of Colorado / NASA

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