SAR
Lens: Nikon Z DX 15-50mm at 23mm f/4.2
Camera: Nikon Z6_3 ISO 25600
Exposure: 3 secs.
Location: MHO
Date: 01-Jan-2025

SAR
Lens: Nikon Z DX 15-50mm at 23mm f/4.2
Camera: Nikon Z6_3 ISO 25600
Exposure: 3 secs.
Processing: PhotoImpact 11
Location: MHO
Date: 01-Jan-2025

SAR
Lens: Nikon Z DX 15-50mm at 24mm f/4.0
Camera: Nikon Z6_3 ISO 25600
Exposure: 2 secs.
Location: MHO
Date: 01-Jan-2025

SAR
Lens: Nikon Z DX 15-50mm at 24mm f/4.0
Camera: Nikon Z6_3 ISO 25600
Exposure: 2 secs.
Processing: PhotoImpact 11
Location: MHO
Date: 01-Jan-2025

SAR arcs were discovered in 1956 at the beginning of the Space Age. Researchers didn’t know what they were and unwittingly gave them a misleading name: "Stable Auroral Red arcs" or SAR arcs.

In fact, SAR arcs are not auroras. Auroras appear when charged particles from space rain down on the atmosphere, causing it to glow. SAR arcs form differently. They are a sign of heat energy leaking into the upper atmosphere from Earth's ring current system–a donut-shaped circuit carrying millions of amps around our planet.