EarthSky Tonight—Oct. 6, Golden Capella sparkles red and green in October
Capella’s red and green flashes do not come from the star itself. They come from refraction of Capella’s light by our atmosphere, when this star is low in the sky.
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Capella’s red and green flashes do not come from the star itself. They come from refraction of Capella’s light by our atmosphere, when this star is low in the sky.