This is an unbelievable photograph, presumably shot by a French amateur astronomer. It shows the International Space Station, with the Shuttle Atlantis hovering next to it, as they are in earth orbit, traversing the disk of the sun. The photograph of the sun is obviously taken with special filters.
Click on the image. This is a large image. Leave it at natural size, and scroll to the black speck at about equator level a quarter of the diameter in from the left.
If you have trouble finding it, I did a close-up for you here: