User blog comment:Rassilon of Old/Young Justice spoilers at Comic-Con 2012/@comment-4967138-20120918233031/@comment-5454370-20120919073211

huh Ok is that a bit below, his answer makes the League not figuring it out over the 5 years actuallly make complete sense. 2815+ sectors, each sector containing however many galaxies, however many stars, however many planets. But only 2 Lanterns. Unless the Lantern were actually stationed on Rimbor like all our GLs are on Earth, they wouldnt really be able to respond the crisis as it happens, that's if they were to even find out about it. Does Hal know everything that happens in a planet on the other side of the sector and be informed of it? no. the ring might provide a history or maybe an alert if he's lucky but he doesnt handle every terrorist attack on probably several dozen planets. Guardians might learn cause of the whole omnisentient bs, but they arent a particularly forthcoming lot when it comes to keeping their members informed of things that may drastically effect them.

Batman, even if he considerred space (it came from John, Batman didnt confirm nor deny, :p) would have no way of specifying the actual planet, (SETI has had zero luck in how many years?, batman while better then seti, cant detect or send signals any faster then they can).