加拿大上空的幽灵极光
(原标题: Ghost Aurora over Canada)
2023-10-22
浏览次数: 17
你觉得极光像什么？2013年的一个清晨，当我们冒着严寒观看加拿大北部上空的天空时，一种最不寻常的极光出现了。极光确实看起来像什么东西，但是是什么呢？天文摄影师记录的两个幽灵可能是“女巫”和“黎明女神”，但请随意提出你自己的万圣节强化印象。不管有什么不切实际的解释，照片上的极光呈现出典型的绿色，这肯定是由来自太空的高能粒子与地球上层大气中的氧气相互作用造成的。在图像的前景，在底部，是一个冻结的亚历山德拉瀑布，而常青树横跨中间。招聘：APOD专业天文学家级别的客座作家和助理编辑
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What does this aurora look like to you? While braving the cold to watch the skies above northern Canada early one morning in 2013, a most unusual aurora appeared. The aurora definitely appeared to be shaped like something, but what? Two ghostly possibilities recorded by the astrophotographer were "witch" and "goddess of dawn", but please feel free to suggest your own Halloween-enhanced impressions. Regardless of fantastical pareidolic interpretations, the pictured aurora had a typical green color and was surely caused by the scientifically commonplace action of high-energy particles from space interacting with oxygen in Earth's upper atmosphere. In the image foreground, at the bottom, is a frozen Alexandra Falls, while evergreen trees cross the middle. Help Wanted: Professional-astronomer level guest writers and assistant editors for APOD
© Yuichi Takasaka, TWAN