Parhelia at Abisko

Astronomy Picture of the Day · 2025-02-15 · NASA (public domain)

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Parhelia at Abisko — APOD for 2025-02-15

Three suns seem to hug the horizon in this otherworldly winterscape. But the evocative scene was captured during a February 3rd snowmobile exploration of the mountainous region around Abisko National Park, northern Sweden, planet Earth . The two bright spots on either side of Earth's Sun are parhelia (singular parhelion), also known as mock suns or sun dogs. The parhelia are caused by hexagonal ice crystals suspended in the hazy atmosphere that reflect and refract sunlight. Commonly seen in winter and at high latitudes, the bright parhelia lie along the visible 22 degree ice halo of the Sun .

Astronomy Picture of the Day for 2025-02-15 — image & explanation courtesy of NASA (public domain), mirrored at Tukuk-OS for reading and search convenience.

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