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What Are Starspots Like on Sun-like Stars?

6 Dec 2018, 23:37 UTC
What Are Starspots Like on Sun-like Stars? NASA

We refer to stars with approximately the same spectral type as the Sun as “Sun-like,” but how similar are they really? One way to gauge this is by studying the stars’ magnetic activity, like their starspots (relatively cool areas of the stellar photosphere where magnetic flux bubbles out of the surface) or stellar flares (sudden releases of energy in the form of lots and lots of photons — all the way from X-ray to radio).

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