You'd Swear This Bright Orb Was Part of the Architecture

Photo date: December 23, 2015. Photographer: Mark Mahin.

The photo below was taken in Grand Central Terminal in New York. Now someone looking at this photo might not think there is anything unusual here. The bright light at the exact top of the arch looks like some deliberately designed feature. But it isn't. It's a mysterious fleeting orb that only appeared in this photo, not in any other of lots of photos I took from the same angle.

Below is a photo from December 11, 2015 that allows us to see that there is not at all a light at the top of this big arch. This photo shows a much larger orb, on the right part of the arch.