False-color image of the Sun from the STEREO Ahead spacecraft on December 4th, 2006. The image is a composite of four views, each highlighting different temperature regimes in the Sun's upper atmosphere: red (60-80,000 Kelvin), blue (1 million Kelvin), green (1.5 million Kelvin), and yellow (2 million Kelvin). This marks the beginning of the STEREO mission's imaging and its exploration of the Sun in three dimensions.
Astronomy Picture from 22/12/2006
The View from Stereo Ahead
Source: https://apod.nasa.gov/apod/ap061222.html
#Sun #SolarDynamics #SpaceWeather #STEREO #Solstice2006 #ExtremeUltraviolet #NASA #Astronomy #Astrophysics #SolarAtmosphere
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