Redemption Ark is a 2002 science fiction novel by Welsh author Alastair Reynolds set in the Revelation Space universe. It continues the story of Nevil Clavain begun in the short stories "Great Wall of Mars" and "Glacial".

Absolution Gap is a 2003 science fiction novel written by Welsh author Alastair Reynolds. It takes place in the Revelation Space universe and is a direct sequel to Redemption Ark.