So I was thinking the other day about space travel, and I thought about nwyfre. From what I understand, half of the nwyfre in the world comes down from the sun and sky, and the other half comes up from deep within the earth itself. After all, Druidry is a religion which worships the earth as a giver of life. So I was thinking, imagine a colony that is on mars or the moon or the like, or really far away from the sun. Would such a colony be possible without the presence of nwyfre? Or does every world have nwyfre of its own? Or only life bearing worlds?