User blog comment:Rassilon of Old/Young Justice spoilers at Comic-Con 2012/@comment-5159732-20120806212401/@comment-34954086-20120812053938

Im thinking that "Earth" isnt really a factor. With the dominator storyline, the metahumans activated by the gene bomb were "seeded" to other worldsm resulting in the races for the Legion time period,Im thinking this "elevating humanity to the stars " is a very literal grand plot.