Entropy of the Galaxy

Sci-Fi: It Has to Be Hard Science Fiction!!!

Something like "The Three-Body Problem", or making a two-dimensional foil by hand.

The Stars! Hard Sci-Fi! Humanity's Journey Across the Sea of Stars!

Earth gradually advances from a fledgling civilization toward the vast cosmos...

Humanity Is Ignorant and Foolish. The World Belongs to the Trisolarans!

Any Books With a Vast Cosmology, From Earth to the Solar System to the Milky Way and Beyond?

Any books with a grand cosmic scale, from Earth to the solar system to the Milky Way?

Hard Sci-Fi, Interstellar Travel or Drifting, and Alien Civilizations

I don't like stories that are constantly at war, fighting from beginning to end, from the Solar System all the way to the Milky Way. I prefer nuanced portrayals of alien societies and storylines, as if observing another civilization.

Pure Science Fiction: No Fantasy, Games, Movies, or Awakening

Interstellar, Spaceships, Major Military Battles, and a System. No Apocalypse

Military life on an interstellar battlefield, where the victor becomes king and the loser is disgraced, play the pig to eat the tiger

Are There Any Hard Science Fiction Novels Like The Three-Body Problem?

Preferably not the starship civilization trope I've seen a million times.

Looking for Spacefaring Civilizations and Starships, No Post-Apocalyptic Stories

The apocalypse from the start ruins the experience.

Any Novels About Advancing Technology, Like Handcrafting a Two-Dimensional Foil? I'm Out of Books to Read