http://www.rifters.com/real/Blindsight.htm
He also shared his Rifters trilogy, which I enjoyed although it's not as good as Blindsight, as well as several short stories:
If you like this kind of thing you may also like Darwin's Radio by Greg Bear. He wrote an article about the science ideas here: http://gregbear.com/pages/newbiology.php
I didn't enjoy this one as much, but the hard-science part was done fairly well.
In the preface to Timemaster (which features time travel and various paradoxical events), he states anyone who wishes to argue against his hard science use of time travel must first have a published article in a peer reviewed journal refuting a particular paper.
Greg Egan. He writes mostly "one big lie" hard sci-fi, but it is always grounded in hard science or math and often extensively cited.
However, as a non-native English speaker, I found it to be hard to follow at times.