Image Credit & Copyright: Alfred Lee

하늘에 나타난 저것은 무엇일까? 이번달 초, 중국홍콩 하늘 높이 이상한 종류의 구름이 두 개나 나타났다. 멀리 배경에 가까운 산에서 공기가 상승하면서 외계인 우주선과 같은 모습의 구름으로 성장하는 기다란 렌즈형 구름이 떠있다. 더 높은 하늘에 더 멀리에는, 알록달록한 무지갯빛 구름이 떠있다. 무지갯빛 구름은 작은 크기의 물방울들이 햇빛을 각각 다른 각도로 분산 시키면서 만들어낸다. 하늘에서 가장 멀리 배경에 있는 태양은 두꺼운 렌즈형 구름으로 가려져 있지만, 그 사이로 무지갯빛을 만들었다. 홍콩에서 또다른 종류의 독특한 구름이 떴었는데, 안타깝게도 불과 몇분 만에 사라졌다.

Explanation: What’s that in the sky? Earlier this month, in the sky high above Hong Kong, China, not just one unusual type of cloud appeared — but two. In the foreground was a long lenticular cloud, a cloud that forms near mountains from uprising air and might appear to some as an alien spaceship. Higher in the sky, and further in the background, was a colorful iridescent cloud. Iridescent clouds are composed of water droplets of similar size that diffract different colors of sunlight by different amounts. Furthest in the background is the Sun, blocked from direct view by the opaque lenticular, but providing the light for the colors of the iridescent. Either type of cloud is unusual to see in Hong Kong, and unfortunately, after only a few minutes, both were gone.

Authors & editors: Robert Nemiroff (MTU) & Jerry Bonnell (UMCP)
NASA Official: Phillip Newman Specific rights apply.
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Translated by: WouldYouLike

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