I have a large photo library, including some of those you're looking for - but no way would I hand over copyright to anybody, not even for money.
What I might, and often do, do, is give somebody the free right to reproduce my images in a particular way. An example is that I did some aerial shots of a local radiotelescope - I handed over the images and a letter saying that they were my copyright, but they had the free right to reproduce them without payment to me, for (list of purposes) so long as they were attributed to me.
I've used images from, amongst others, NASA and Northrop-Grumman for my own work, on the same basis.
Everybody was entirely happy with that, and I can't see why you shouldn't be either.
G