Copyright:Alfredo Vidal Pérez
中文翻譯:
現在，最近歷史上最大的太陽黑子群之一正在橫跨太陽。活躍區域4478不僅龐大——它還非常活躍，擁有交錯的磁場，能夠將巨大的粒子雲拋入太陽系。一些這些日冕物質拋射（CME）可能會影響地球。在最嚴重的情況下，這些太陽風暴可能會導致一些繞地球運行的衛星出現故障，地球的大氣層輕微變形，以及電力系統的過載。當這些粒子影響到地球的高層大氣時，可以產生美麗的極光。這裡展示的是活躍區域4478及其黑子，幾天前在西班牙巴塞隆納的可見光中捕捉到。這個活躍區域4478的黑子群幾乎和2024年的活躍區域3664一樣大，以至於只需特別設計的太陽蝕眼鏡就能看到。這一週，全球的觀星愛好者不僅會跟踪活躍區域4478在白天的動態，還會在夜空中密切注意其對應的亮極光。
原文:
Right now, one of the largest sunspot groups in recent history is crossing the Sun. Active Region 4478 is not only big — it’s violent, showing tangled magnetic fields capable of throwing off huge clouds of particles into the Solar System. Some of these CMEs might impact the Earth. At the extreme, these solar storms could cause some Earth-orbiting satellites to malfunction, the Earth’s atmosphere to slightly distort, and electrical power grids to surge. When impacting Earth’s upper atmosphere, these particles can produce beautiful auroras. Pictured here, AR 4478 and its dark sunspots were captured in visible light a few days ago from Barcelona, Spain. Almost as large as AR 3664 was in 2024, the AR 4478 sunspot group is so big that it is visible just with glasses specially designed to view solar eclipses. This week, skygazing enthusiasts all over the globe will not only be tracking AR 4478 during the day — but keenly watching night skies for its corresponding bright auroras. Sky Surprise: What picture did APOD feature on your birthday? (after 1995)
來源:NASA每日圖片
