穿越水面的行星線
Planet Lines Across Water

來源:Jose Antonio Hervas|發表日期:2025-05-05
是什麼造成了這些線條?天空中的物體有時會在水面上反射出線條,這是為什麼呢?如果水面是光滑的,那麼反射的物體也會呈現出類似的效果--光斑。但如果水面波濤洶湧,那麼在很多地方,物體發出的光線都會反射到水面上,但仍然會照射到你的身上--這樣就形成了典型的線條。日落前和日出後的太陽也經常出現同樣的效果。圖為大約 10 天前在西班牙伊維薩島拍攝到的落日月亮、金星(上圖)和土星(右圖,微弱)的影像,這些影像既有直接拍攝的,也有從地中海上以線條反射形式拍攝的。右側另一個帶有水線反射的明亮物體是岩石上的燈塔,用來警告過往船隻。 探索你的宇宙隨機 APOD 生成器
原文:What’s causing those lines? Objects in the sky sometimes appear reflected as lines across water — but why? If the water’s surface is smooth, then reflected objects would appear similarly -- as spots. But if the water is choppy, then there are many places where light from the object can reflect off the water and still come to you -- and so together form, typically, a line. The same effect is frequently seen for the Sun just before sunset and just after sunrise. Pictured about 10 days ago in Ibiza, Spain, images of the setting Moon, Venus (top), and Saturn (right, faint) were captured both directly and in line-reflected forms from the Mediterranean Sea. The other bright object on the right with a water-reflected line is a beacon on a rock to warn passing boats. Explore Your Universe: Random APOD Generator
※ 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。