Last Monday’s Mercury transit was, of course, observed by a great many people, including acclaimed astrophotographer Thierry Legault. And since just photographing the sun simply isn’t enough challenge, of course Legault had to find a location where he could get the ISS transiting as well. He traveled to Philadelphia in the US to be in exactly the right spot for the ISS to transit while Mercury was neatly in the center of the Sun’s disk — and he got lucky enough to catch a small plane as well:
Legault’s work really is amazing, and you should check out his website for more. This link is for the 2016 Mercury transit, and includes a spectacular high resolution image. The amount of detail really is extraordinary.