火箭凌日
(原标题: Rocket Transits Rippling Sun)
2022-05-31
浏览次数: 17
在日出时发射火箭可能会产生不寻常但有趣的图像，其中包括火箭和太阳。上个月，SpaceX的猎鹰9号火箭从美国宇航局肯尼迪航天中心发射升空，携带53颗星链卫星进入近地轨道。在这张特别的发射照片中，火箭的排气羽流在它投射到遥远的太阳上的投影之外发光，火箭本身看起来奇怪地参差不齐，太阳的下缘显示出奇特的滴水状涟漪。所有这些效应的物理原因是相对较热或稀薄的空气比相对较冷或压缩的空气对阳光的偏转更弱：折射。不知道地球的表演，活跃的太阳黑子区3014 -左上角-慢慢地穿过太阳。
查看原文解释
The launch of a rocket at sunrise can result in unusual but intriguing images that feature both the rocket and the Sun. Such was the case last month when a SpaceX Falcon 9 rocket blasted off from NASA's Kennedy Space Center carrying 53 more Starlink satellites into low Earth orbit. In the featured launch picture, the rocket's exhaust plume glows beyond its projection onto the distant Sun, the rocket itself appears oddly jagged, and the Sun's lower edge shows peculiar drip-like ripples. The physical cause of all of these effects is pockets of relatively hot or rarefied air deflecting sunlight less strongly than pockets relatively cool or compressed air: refraction. Unaware of the Earthly show, active sunspot region 3014 -- on the upper left -- slowly crosses the Sun.
© Michael Cain