Just to let you know that there might be problem in entering some of these types of images in club and external competitions. Our own rules state:
"4. All entries shall be the original work of the member, who must hold the copyright. Entries may be straight scans, manipulated or composites of multiple images but all work must be the unaided work of the photographer. "
In the past we have taken this to mean that the main elements of the image have actually been photographed by the member entering the competition. For example, that would mean you would probably have to justify taking the image which has Jupiter in it.
I remember that we made an exception for using 'stock images' of textures, but nothing else.
I can see that this opens up a discussion on what is and what is not acceptable.
I really like what you have produced, so I am really sorry to be a party-pooper.