The Authority, series 2, book 2 : Fractured Worlds
Robbie Morrison, Dwayne Turner et Whilce Portacio2005

High above Earth aboard a fifty-mile-wide alien vessel powered by a baby universe live the Authority; the alien-designed King of Cities Jack Hawksmoor; the shamanic Doctor; the winged warrior Shen Li-Min; the lithe cyborg Engineer; the leather-clad Midnighter and the solar-powered force of nature known as Apollo. When interference by world governments caused an alien spaceship to crash into Florida, the Authority were forced to take matters into their own hands and are now, quite literally, running the planet. They are the only real superpower left on Earth, but after their coup things aren't going quite as well as planned...