As the free heroes deliberated, Kylstar received news his assets had come loose.
Background in other media
In the comics, the Justice League had their base on the moon until is was destroyed in Infinite Crisis.
For his previous series Gargoyles, Greg Weisman admitted the moon was always portrayed as full unless it was important to the plot. This seems to be the case for Young Justice too, as to date, only "Schooled" and "Insecurity" showed non-full moons.