金星和三紫外太陽
Venus and the Triply Ultraviolet Sun
發表日期：2025-03-16
這是一次非常不尋常的日食。 通常情況下，是地球上的月亮食了太陽。 但在 2012 年，金星卻發生了變化。 就像月球的日食一樣，隨著金星與太陽的對準越來越好，金星的相位也變成了一條越來越細的新月。 最終，對準變得完美，金星的相位降為零。 金星的黑點穿過了我們的母星。 從技術上講，這種情況可以被稱為金星環食，帶有一個特別大的火環。 圖為掩星期間，地球軌道上的太陽動力學天文臺用三種顏色的紫外線對太陽進行了成像，右側的暗區與日冕洞相對應。幾小時後，當金星繼續在其軌道上執行時，又出現了輕微的新月相。 下一次金星凌日將發生在 2117 年。
原文：This was a very unusual type of solar eclipse. Typically, it is the Earth's Moon that eclipses the Sun. In 2012, though, the planet Venus took a turn. Like a solar eclipse by the Moon, the phase of Venus became a continually thinner crescent as Venus became increasingly better aligned with the Sun. Eventually the alignment became perfect and the phase of Venus dropped to zero. The dark spot of Venus crossed our parent star. The situation could technically be labeled a Venusian annular eclipse with an extraordinarily large ring of fire. Pictured here during the occultation, the Sun was imaged in three colors of ultraviolet light by the Earth-orbiting Solar Dynamics Observatory, with the dark region toward the right corresponding to a coronal hole. Hours later, as Venus continued in its orbit, a slight crescent phase appeared again. The next Venusian transit across the Sun will occur in 2117.
※ 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！
關於每日一天文圖：每日一天文圖網站是美國國家航空暨太空總署與密西根理工大學提供的服務，網站每天提供一張影像或圖片，並由天文學家撰寫扼要說明其特別之處。