J'onn nodded. "A being from outside our reality, called Doctor Manhattan, attempted to... and succeeded, in altering our reality. His was a more cynical, harsher universe, and he wished to prove that his cynicism was the correct belief, and tried to steal time and memories from ours, in an effort to wipe out hope."

His eyes flashed briefly with something like anger. "He failed, and reality was largely restored. But... not evenly, and not the same for everyone. And not all is as it was."