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2026-08-27 04:06:54 UTC

APOD on Nostr: **Astronomy Picture of the Day** 27 August 2026 **Colorful Aurora over Icelandic ...

**Astronomy Picture of the Day**

27 August 2026

**Colorful Aurora over Icelandic Waterfall**

Image:

Credit: Not provided

What a sight to behold, when a night sky became filled with colors that appeared to rain over the Skógafoss waterfall in Iceland. This image was taken in a single 5 second exposure by the photographer in April 2025. Seeing an aurora is on many people's bucket lists. But it is not easy. It requires high solar activity , dark and clear skies, and usually a viewing location at high latitude. That makes the northern lights more easily seen than the corresponding southern lights , simply because there is less landmass in the Southern Hemisphere, especially around the Antarctic Circle . Auroras are caused by charged particles from the solar wind that are captured by the Earth's magnetosphere and guided by the magnetic field to a region close to one of the poles, where they collide with gas particles in the atmosphere . Different colors indicate interactions with different gases at different altitudes , like oxygen ( red and green ) and nitrogen ( blue and pink ).

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https://apod.nasa.gov/apod/ap260827.html