The easiest way to explain this is in the form of a story.
[A beat.]
A long, long time ago, each of these planets, and the moon had a kingdom living on them. A kingdom of magic and technology as advanced as Cerealia. The inhabitants of all but Earth were largely immortal, sustained by magic. And they all worked together, save Earth, as allies under the guidance of the Moon Kingdom and their queen, Serenity. This time was referred to as the Silver Millennium, some...five hundred thousand years before our epoch.
no subject
[A beat.]
A long, long time ago, each of these planets, and the moon had a kingdom living on them. A kingdom of magic and technology as advanced as Cerealia. The inhabitants of all but Earth were largely immortal, sustained by magic. And they all worked together, save Earth, as allies under the guidance of the Moon Kingdom and their queen, Serenity. This time was referred to as the Silver Millennium, some...five hundred thousand years before our epoch.