Dual Solar Eruptions from Sunspot Groups 4478 & 4479: View from SwedenAstrophotographer P-M Hedén: "Lovely sight today through the Ha solar filter. I witnessed two outbursts from sunspot groups 4478 & 4479."Occasionally, dark spots freckle the face of the Sun. These are sunspots, cooler regions on the Sun caused by a concentration of magnetic field lines. Sunspots are the visible component of active regions, areas of intense and complex magnetic…
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