Is this the anomaly you are talking about?
Julia showed Mark a drawing she made of what she saw in the skies a couple of days earlier. The drawing depicted a man pedaling in a flying machine. The man had a white beard and long white hair, large goggles over his face. He wore a shirt, shorts and low boots. Around him a school of flying fish and a flying whale.
Mark looked at the drawing, lifting his shoulders a little, as he did when things fascinated him. His head was slightly bent, as if he could see through the drawing the open skies. Julia looked at him and said nothing.
How do you explain this? It seems to me we have a number of anomalies altogether. Or not? Find this man and ask him.
Do you know him?
I would go to the Museum of Possibilities, he seems like someone who may visit the place. Take the drawing with you and show it around.