挪威上空的怪物状极光

2023年11月5日

Creature Aurora Over Norway
Image Credit & Copyright: Ole C. Salomonsen (Arctic Light Photo)

Explanation: It was Halloween and the sky looked like a creature. Exactly which creature, the astrophotographer was unsure (but possibly you can suggest one). Exactly what caused this eerie apparition in 2013 was sure: one of the best auroral displays that year. This spectacular aurora had an unusually high degree of detail. Pictured here, the vivid green and purple auroral colors are caused by high atmospheric oxygen and nitrogen reacting to a burst of incoming electrons. Birch trees in Tromsø, Norway formed an also eerie foreground. Frequently, new photogenic auroras accompany new geomagnetic storms.

Almost Hyperspace: Random APOD Generator

Tomorrow’s picture: aurora red

挪威上空的怪物状极光
影像提供与版权: Ole C. Salomonsen (Arctic Light Photo)

说明: 拍照的那天是万圣节，而天空也看似有怪物出没。到底是那种怪物呢？这位天文摄影者并无法确认，或许你可以提出建议。不过，这些出现在2013年的怪异魅影之成因倒是很明确，它是那年最精采的极光之一。这例壮观的极光，展现了非常多的细微结构。上图所呈现的鲜明绿和紫极光，是高层大气中的氧和氮对入射的电子狂潮之反应，而前景则为位在挪威Tromsø的怪形桦树。此外，近来的新地球磁暴，经常有许多很美丽的极光为伴。

几乎超空间: 随机APOD生成器

明日的图片: aurora red