Blindsight by Peter Watts
Pushing Ice by Alastair Reynolds
Startide Rising by David Brin
A Fire Upon the Deep by Vernor Vinge
The Algebraist by Iain M. Banks
Semiosis by Sue Burke
Project Hail Mary by Andy Weir
Dragon's Egg by Robert L. Forward
Solaris by Stanisław Lem
The Mountain in the Sea by Ray Nayler
The Long Way to a Small, Angry Planet by Becky Chambers
Translation State by Ann Leckie
Pandora's Star by Peter F. Hamilton
The Mote in God's Eye by Larry Niven & Jerry Pournelle
House of Suns by Alastair Reynolds
This is what sprang to mind as answering that sort of brief off the top of my head.