Science Fiction Stories with Good Astronomy and Physics: A Topical Index
Basically anything by Greg Egan is great.His early short stories have a lot of "drugs can let your brain talk to other dimensions" and "your mind literally makes reality" (though some of those are also really good, "The Infinite Assassin" is a great read and it's only like 15 pages), but his later full books are basically all hard (if speculative) physics stuff.Dichronauts is difficult to get your head around, but very rewarding. It's about cartographers who work in a universe with essentially 2.5 dimensions of space and 1.5 dimensions of time.The Orthogonal trilogy is about a species living in a toroidal universe where all 4 dimensions are identical and interchangeable.The universes of Diaspora, Schild's Ladder, and Incandescence are set in a future when most intelligent life in the galaxy lives in a network of space-computers and interact with the outside world via robots and programmable matter.Oh and I almost forgot the Bobiverse series. Not by Egan, but still good. Some guy gets stuck in a brain-computer and sent off in a self-replicating space probe to prepare other planets for human colonization.