There is this concept of a “moon chain” in the writing of Alice A. Bailey that I think is fairly unique to her writings (or of Djwhal Khul). Apparently a “moon chain” is “the cycle of evolution preceding ours” (see very last quote below).
Joseph J. Dewey, author and longtime student of the AAB writings, has an interesting comment on this:
Technically all of us are aliens. None of us originated here on planet Earth. Each one of us are immortal beings and came from an eternal source where all that exists is an eternal present. We have passed in and out of many systems of creation but as far as the system of creation goes most of the people here are native to planet Earth or the Moon Chain. -Joseph J. Dewey, Questions
Quotes below for “moon chain” in the AAB writings: