Cyclops sacrificed himself in the previous issue so that the X-Men could get away from Kruun’s ships. Kruun then resurrects Cyclops in order to get information on their secret weapon Leviathan.
What I don’t like in this whole explanation is that Breakworld has managed to find a way to defeat death, yet they’re not selling the process or service to anyone in the galaxy? I’m sure some wealthy Shi’ar or other alien race would pay handsomely to revive a love one.
From – Astonishing X-Men Vol. 3 #23