I have some questions about the photo you linked to.

The photo appears to be a time exposure of an iridium flare, but close examination shows stars superimposed on the solar panels of the ISS. This suggests that the photo is a digital pastiche of two separate images, not a single "chance" photo as described.

Given evidence for digital manipulation of the image, it loses its value. In fact, there is no evidence that this is not a terrestrial image of an Iridium flare superimposed on an in-orbit image of the solar panels.

I have asked the responsible NASA officials to comment on this indication of image manipulation...