Want a book about space exploration, discovery, alien life, and the meaning of the universe?

Hey guys I’ve been playing a lot of No Man’s Sky and listening to the Odyssey albums by Voices from the Fuselage and I am on a space addiction currently. Would love a story about exploring space and discovering new worlds and the civilizations that inhabit them. Would prefer less magic-fantasy and more technological advancement fantasy. Like light speed engines, cryo sleep, but still somewhat realistic physics? Thanks!