中文翻譯:
在遙遠的太空中，有一顆名叫Titan的神秘月球！Titan的表面被厚厚的雲霧包圍著，所以從遠遠的地方很難看到它的樣子。它的上層大氣裡有很多小顆粒，這些顆粒讓光線變得模糊，也隱藏了Titan的秘密。不過，當我們用紅外線的方式來看Titan時，情況就不一樣了！紅外線的光線不會像可見光那樣被大氣散射，會更清楚地顯現出Titan的表面特徵。這幅圖片顯示了過去13年來，來自NASA的Cassini太空船所拍攝的Titan的紅外線影像，這讓我們得以欣賞這顆迷人的月球！在圖片的中間，大家也可以看到Titan在可見光下的樣子。NASA還計劃在2028年7月進行一個神奇的新任務，讓一架旋翼機直接降落到Titan的表面，讓我們更進一步探索這顆特殊的月球！
原文:
Shrouded in a thick atmosphere, the surface of Saturn’s largest moon, Titan, is really hard to see. Small particles suspended in Titan’s upper atmosphere cause an almost impenetrable haze, strongly scattering light at visible wavelengths and hiding surface features from prying eyes. Still, Titan’s surface is better imaged at infrared wavelengths, where scattering is weaker and atmospheric absorption is reduced. Arrayed around this visible light image (center) of Titan are some of the clearest global infrared views of the tantalizing moon so far. In false color, the six panels present a consistent processing of 13 years of infrared image data from the Visual and Infrared Mapping Spectrometer (VIMS) on board the Cassini spacecraft orbiting Saturn from 2004 to 2017. They offer a stunning comparison with Cassini’s visible light view. NASA’s revolutionary rotorcraft mission to Titan’s surface is due to launch no earlier than July, 2028.
來源:NASA每日圖片
