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美国国家航空航天局NASA每日一图-2017年8月16日(海上)

2017 August 16

Perseid by the Sea 
Image Credit & Copyright: Tamas Ladanyi (TWAN)
Explanation: Just after moonrise on August 12 this grain of cosmic sand fell by the sea, its momentary flash part of the annual Perseid Meteor Shower. To create the Perseid meteors,dust along the orbit of periodic comet Swift-Tuttle is swept up by planet Earth. The cometary debris plows through the atmosphere at nearly 60 kilometers per second and is quickly vaporized at altitudes of 100 kilometers or so. Perseid meteors are often bright and colorful, like the one captured in this sea and night skyscape. Against starry sky and faint Milky Way the serene view looks south and west across the Adriatic Sea, from the moonlit Dalmatian coast toward the island of Brac.

2017年8月16日

海上 坚持
图像信用与 版权: Tamas Ladanyi (TWAN)
说明: 8月12日月出之后,这颗宇宙沙粒在海上坠落,是一年一度的Perseid流星雨的瞬间闪现 。为了创造坚固的流星, 沿周期彗星的轨道上的尘埃 Swift-Tuttle被行星地球所扫除。该彗星碎片以每秒近60公里的大气层犁,在100公里左右的高度迅速蒸发。 坚固的流星 通常是明亮多彩的,像在这个海上和夜晚的天空中捕获的流星。 对着星空和微弱的银河系,宁静的景色看起来南亚和西亚横跨亚得里亚海,从月光 达尔马提亚海岸到布拉奇岛。

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