Hard Science Fiction > Manifold series

(1999-2003) by Stephen Baxter>) [3.8 avg] Stephen Baxter explores the Fermi Paradox in different ways over the course of three books (and a collection of novellas), in a gloriously hard scifi style. It is very thought provoking, and also utterly brutal and bleak. Space and time is cold and uncaring. - @nahkampf