[Nogwater]

I'd like to suggest Blindsight by Peter Watts. https://en.m.wikipedia.org/wiki/Blindsight_(Watts_novel)

[geon]

I just read it. What part of it is accurate astronomy and physics, specifically?

[zipwitch]

The lack of FTL and time required to get anywhere in the outer reaches of the solar system, the hypothetical but plausible antimatter-beamed power, the rogue sub-dwarf planet, are lots of similar small details. (I won't say more lest I risk spoiling the plot.)

[dozzie]

It's rather physiology, not physics.