Here is the explanation:
1. The APOD image is *NOT* aligned with the horizon. Click [HERE] to see the same image turned, so that the horizon is parallel to the edge of the image.
2. There are (at least) two ways to interpret the silhouette of the airplane. One way is wrong and looks like a perspective where you see the top of the aircraft. In fact, the image shows the bottom side of the aircraft! I tried to figure out both ways -> [Correct way] and [Wrong way]. Please compare.
3. I got a shot that evening with another airplane, but without vapor trails. -> [LINK] It was before the APOD was taken and I haven´t processed that one at all.
I hope this helps.
Stuttgart, May 13, 2005