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最近的天文事件讓天文愛好者大飽眼福,首先是上週三壯麗的豐收月。幾天後,太陽向地球噴射出被稱為日冕物質拋射 (CME) 的巨大等離子體氣泡。當所謂的太陽絲狀物坍塌,將涼爽、稠密的氣體傾瀉到太陽表面時,就會形成 CME。當在黑暗的天空背景下側視時,這些絲狀物被稱為日珥(右圖)。當 CME 衝擊地球磁層時,它們引發了壯觀的極光,儘管接近滿月的明亮光線,歐洲和北美的觀測者在週日晚上仍然可以看到極光。(昨天凌晨,一個衝擊波掠過我們的星球,可能是另一個 CME 的前沿。)小行星愛好者也沒有失望。近地小行星 (NEA) 2000 RD53 是美國宇航局近地小行星追蹤系統 (NEAT) 上個月剛剛發現的,於週日飛掠地球,距離地球僅為月球距離的 11 倍。藉助八英寸或更大的望遠鏡,觀測者仍然可以瞥見這顆明亮的 400 米太空岩石。

Kate Wong is an award-winning science writer and senior editor at 大眾科學 focused on evolution, ecology, anthropology, archaeology, paleontology and animal behavior. She is fascinated by human origins, which she has covered for more than 25 years. Recently she has become obsessed with birds. Her reporting has taken her to caves in France and Croatia that Neandertals once called home, to the shores of Kenya's Lake Turkana in search of the oldest stone tools in the world, to Madagascar on an expedition to unearth ancient mammals and dinosaurs, to the icy waters of Antarctica, where humpback whales feast on krill, and on a "Big Day" race around the state of Connecticut to find as many bird species as possible in 24 hours. Kate is co-author, with Donald Johanson, of Lucy's Legacy: The Quest for Human Origins. She holds a bachelor of science degree in biological anthropology and zoology from the University of Michigan. Follow Wong on X (formerly Twitter) @katewong

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