There are 2 books in the The Commonwealth Saga series. The newest book is Judas Unchained which came out in 2006.

1
Pandora's Star

Book cover of Pandora's Star
In AD 2329, humanity has colonised over four hundred planets, all of them interlinked by wormholes. With Earth at its centre, the Intersolar Commonwealth now occupies a sphere of space approximately four hundred light years across.When an astronomer on the outermost world of Gralmond, observes a star 2000 light years…
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2
Judas Unchained

Book cover of Judas Unchained

Judas Unchained concludes the Commonwealth Saga duology by Peter F. Hamilton - one of the world's bestselling science fiction writers.

Our worlds are under invasion - and only the impossible can save us now . . .

For hundreds of years, the human race has been manipulated into starting a…