Synopsis
A second moon suddenly materialises and as several league members attend to areas impacted by the gravitational impacts of the second planetoid, Superman and Green Lantern fly to the new moon and are told by the creatures who live on it that if they attempt to move the moon it they will be responsible for destroying all those living on it.
Green Lantern eventually determines that the moon has shifted from Earth’s distant past and Superman manages to shift it again a billion years in the future when the Earth is extinct and the impacts of the moon are no longer a danger to humans.