Stephen Baxter’s Last and First Contacts is a collection of short stories that to me, have the common theme of scale. There are stories about dark matter ripping the universe apart, and about alien consciousness that is propagated by gravity waves, and story after story of life continuing without people, or with radically changed people. It was a collection of big stories and I liked that.
Strangely, the first story in the book, and the only new story, is the smallest scale, about an amateur German astronomer working on Von Braun’s rockets. I also really liked the pulpy alternate history exploration story about a world where the Pacific was uncrossable, not because of storms, but distance-wise. On a Nazi air-city they fly the distance from the Earth to the Moon over the ocean but never get to the Americas because of a fold in space that hides remnants of the past, mammoths and Neanderthals and dinosaurs. It was very neat.