L-Għaqda Maltija tal-Astronomija

SUNSPOTS OF INTEREST

admin November 13, 2013 news Comments Off on SUNSPOTS OF INTEREST

Solar activity today is low, but there is reason to believe the quiet won’t last. At least three sunspots pose a latent threat for strong flares. They are circled in this image from NASA’s Solar Dynamics Observatory: Just returning from a transit of the sun’s farside, old sunspot AR1875 is back on the Earthside where it unleashed several strong flares in October. A second round of eruptions from this active region could be in the offing. Complex sunspots AR1890 and AR1897 also pose a threat for flares. NOAA forecasters estimate a 65% chance of M-class flares and a 35% chance of X-flares during the next 24 hours. *Solar flare alerts:* text , voice

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