天文現象定義與歷史背景 「七星連珠」指太陽系中七顆行星（水、金、火、木、土、天王、海王星）在黃道面上的視覺排列。根據NASA噴射推進實驗室（JPL）曆表計算，2025年2月28日將出現七顆行星聚集在33度天區範圍內的天象（註1），雖非嚴格直線排列，但已達近百年最緊密紀錄。 此現象需滿足兩大條件： 香港觀測實務分析 最佳時段2025年3月15日 05:15-05:45 HKT此時七顆行星將分佈於東方地平線至仰角35度之間，水星與海王星因接近地平線需借助雙筒望遠鏡觀測。 可見度挑戰 專業器材建議 科學意義與觀測價值 注意事項與替代方案 結語 七星連珠雖無末日論所述影響（NASA已多次澄清），卻是難得的天文盛事。香港因應光害管制條例逐步落實（註4），此事件將測試城市觀星潛力。建議讀者提前熟悉行星辨識技巧，並參考香港天文台即時天氣預報調整計畫。 數據來源註1：JPL Horizons...
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