本色冥王星
Pluto in True Color
發表日期：2024-01-28
冥王星到底是什麼顏色的？這需要費一番功夫才能弄明白。 即使考慮到機器人 "新視野號 "飛船在 2015 年飛越冥王星時傳回地球的所有影像，要處理這些多光譜影像以接近人眼所見也是極具挑戰性的。在新視野號獲取原始資料三年後，這裡展示的結果是迄今為止拍攝到的解析度最高的冥王星真彩圖像。影像中可以看到淺色的、心形的 Tombaugh Regio，由冷凍氮構成的 Sputnik Planitia 則出乎意料地光滑，充斥著它的西側葉片。新視野號發現，這顆矮行星的表面出奇地複雜，由許多色調明顯不同的區域組成。 不過，總的來說，冥王星大部分是棕色的，其柔和的顏色大部分來自於表面少量的甲烷，這些甲烷被來自太陽的紫外線所激發。
原文：What color is Pluto, really? It took some effort to figure out. Even given all of the images sent back to Earth when the robotic New Horizons spacecraft sped past Pluto in 2015, processing these multi-spectral frames to approximate what the human eye would see was challenging. The result featured here, released three years after the raw data was acquired by New Horizons, is the highest resolution true color image of Pluto ever taken. Visible in the image is the light-colored, heart-shaped, Tombaugh Regio, with the unexpectedly smooth Sputnik Planitia, made of frozen nitrogen, filling its western lobe. New Horizons found the dwarf planet to have a surprisingly complex surface composed of many regions having perceptibly different hues. In total, though, Pluto is mostly brown, with much of its muted color originating from small amounts of surface methane energized by ultraviolet light from the Sun.
※ 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。