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- Wed Aug 05, 2009 5:33 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: A Triple Sunrise Over Gdansk Bay (2009 Aug 04)
- Replies: 338
- Views: 53869
Re: Cause of Triple Sunrise (APOD 2009 August 4)
Sundogs mock suns or parhelia Sundogs, also known as mock suns or "parhelia", are a pair of brightly colored spots, one on either side of the sun. Photograph by: Rauber Sundogs form as sunlight is refracted by hexagonal plate-like ice crystals with diameters larger than 30 micrometers and ...