A trader from Quarth told me that Dragons come from the moon. ...
Handmaiden: A trader from Quarth told me that Dragons come from the moon.
Daenerys Targaryen: The moon?
Handmaiden: He told me the moon was an egg, khaleesi. That once there were two moons in the sky, but one wandered too close to the sun and it cracked from the heat. Out of it poured a thousand thousand dragons and they drank the sunâ€™s fire.