夕陽下的 AR 3664
AR 3664 on a Setting Sun
來源：Marco Meniero｜發表日期：2024-05-13
它比地球還大。它是如此之大，以至於不用放大鏡就能在太陽表面看到它。它包含強大而糾結的磁場以及無數黑子。它被命名為 AR 3664 ，發展成為近年來太陽上能量最強的區域之一，引發了一系列爆炸，導致高能粒子激增，撞擊地球，產生了美麗的極光。這種現象可能還會繼續。 雖然像 AR 3664 這樣的太陽活躍區可能相當危險，但該區域的日冕物質拋射尚未對地球軌道衛星或地球表面電網造成太大的破壞。圖為幾天前從義大利羅馬的奇維塔韋基亞拍攝到的日落時分的巨大活躍區域。這張合成圖只包含了太陽表面非常短的曝光時間，但卻模擬了實際可見的情況。 最後，AR 3664 現在正在遠離地球的地方自轉，不過該區域可能會存活足夠長的時間，然後再次出現在地球周圍。 相簿：來自太陽活動區域 6443 的地球極光
原文：It was larger than the Earth. It was so big you could actually see it on the Sun's surface without magnification. It contained powerful and tangled magnetic fields as well as numerous dark sunspots. Labelled AR 3664, it developed into one of the most energetic areas seen on the Sun in recent years, unleashing a series of explosions that led to a surge of energetic particles striking the Earth, which created beautiful auroras. And might continue. Although active regions on the Sun like AR 3664 can be quite dangerous, this region's Coronal Mass Ejections have not done, as yet, much damage to Earth-orbiting satellites or Earth-surface electrical grids. Pictured, the enormous active region was captured on the setting Sun a few days ago from Civitavecchia, Rome, Italy. The composite image includes a very short exposure taken of just the Sun's surface, but mimics what was actually visible. Finally, AR 3664 is now rotating away from the Earth, although the region may survive long enough to come around again. Gallery: Earth Aurora from Solar Active Region 6443
※ 本文由萌芽機器人自動轉貼自每日一天文圖（Astronomy Picture of the Day，APOD），原文為英文，正體中文是透過 DeepL 翻譯及 OpenCC 進行自動處理，內容僅供參考，若有任何錯誤之處還請見諒！
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