House of Suns is another epic, set six million years in the future, with long-lived clones who regularly circumnavigate the entire galaxy and a race of sentient robots, there are ambushes and betrayals, and a high-speed chase that lasts thousands of years and takes us as far as the Andromeda Galaxy. If that's not enough to excite your sense of wonder, you really shouldn't be reading science fiction.
Reynolds's most recent work is also on a grand scale. The Poseidon's Children trilogy starts, in Blue Remembered Earth, in a near future when Africa is the world's leading technological power, and two members of a powerful African clan gather cryptic clues that lead them to the outer reaches of the solar system. By the time of the second volume, On the Steel Breeze, it is 200 years later and a fleet of generation starships are approaching a world where mysterious signals have been observed, but there's treachery afoot, while the legacy of events from the first volume still linger. The third volume, Poseidon's Wake, takes us yet further into the future and out to other stars to encounter the mysterious aliens hinted at in the first two books.
If you're in to space opera, don't forget the granddaddy of them all, E.E. "Doc" Smith, whose seven volume Lensman series begins with two galaxies colliding, and just gets bigger. By the end of the series suns and planets are being tossed about as weapons in a massive interstellar war.