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solar_sun_1653022cHIGH SOLAR ACTIVITY: This week, Jupiter-sized sunspot AR1890 unleashed two brief but intense X-class solar flares and numerous M-class solar flares. More eruptions are in the offing as the sunspot turns to directly face Earth over the weekend. X-flare alerts are available from http://spaceweathertext.com (text) and http://spaceweatherphone.com (voice).

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