What is the likely cause of rapidly changing, multi-colored lights reported near Orion's Belt by amateur observers?

Answer

Artificial satellites or high-altitude aircraft reflecting sunlight towards the observer.

The light from true, distant stars like those in Orion's Belt is steady over human timescales. Rapid changes in color or blinking are characteristic of closer, foreground objects reflecting light as they orbit or fly.

What is the likely cause of rapidly changing, multi-colored lights reported near Orion's Belt by amateur observers?
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