gliese 581

A composite image of the sun photographed in Ha (left) and CaK(right) wavelengths... prepared to help illustrate an article by Paul Robertson of Penn State showing that evidence for the celebrated exoplanet Gliese 581G is actually related to stellar activity (starspots) rather than to the gravitational effects of an earth-like planet.

July 4, 2014/prepared from data captured with Little Big Man, PGR Grasshopper Express 6 megapixel camera

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