Hard science fiction writers…

I am hard at work on several new projects, and I’ve decided to put out a call for recommendations here on the blog and out in Twitterverse land.  I am working on a new hard SF anthology and am compiling a list of hard SF writers that the book might include. Now, when I say hard SF writers I’m not talking about writers who could write hard SF or are capable of writing hard SF, but about writers with a track record of writing hard SF: writers like Greg Egan, Greg Bear, Nancy Kress, Linda Nagata and so on.  So, if you can think of a terrific hard SF writer who should be in an original anthology of hard SF stories, jump on the comments thread here and recommend away. I’d love to hear your thoughts.