ufofeed, https://www.ufofeed.com/71824/large-sunspot-groups-and-strong-solar-flares-led-to-the-issuance-of-noaa-space-weather-prediction-centers-first-g4-watch-since-2005/ Large sunspot groups and strong solar flares led to the issuance of NOAA Space Weather Prediction Center’s first G4 Watch since 2005 #Astrobiology #Astrophysics #Cosmology #PlanetaryScience #Space #SpaceExploration
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