The 3-minute video here shows a strange object I photographed for three minutes in the night sky. The noiseless object very slowly descended from a position far above a fence, to a position down to about the height of the fence. At about the 55 second mark, the object starts pulsating, making about 15 changes in brightness. At about the 2:30 mark the object started changing color from white to red. The object moved away to the left, and after 3 minutes I could no longer see it, as it was blocked by trees or a building.
Below are two photos of the strange object. The left photo shows the object at about the 58 second mark, during one of its pulsations. The second photo shows a frame in which the object took on a red appearance.