• Released Friday, August 31st, 2018
  • Updated Thursday, May 16th, 2024 at 12:00AM


The Solar Dynamics Observatory

The Solar Dynamics Observatory, or SDO, is a geosynchronous-orbiting satellite designed to help us understand the Sun’s influence on Earth by studying the solar atmosphere. SDO’s goal is to understand, driving towards a predictive capability, the dynamic solar activity that drives conditions in near-Earth space, called space weather. SDO observations help us explain where the Sun's energy comes from, how the inside of the Sun works, and how the Sun’s atmosphere stores and releases energy in dramatic eruptions.

Every twelve seconds, SDO images the Sun in ten wavelengths of ultraviolet light. Each wavelength reveals different solar features and is assigned a unique color. Every image is eight times the resolution of HD video. From dark coronal holes or bright active regions on the solar surface to immense eruptions and flares that lash out millions of miles above the surface, SDO looks far into the Sun’s blazing atmosphere.

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