i think Ra said so.
"89.11 Questioner: Did it later, then, become a fifth-density planet?
Ra: I am Ra. It later became a fourth/fifth-density planet; then, later a fifth-density planet for a large measure of your time. Both fourth- and fifth-density experiences were possible upon the planetary influence of what you call Venus."
"89.11 Questioner: Did it later, then, become a fifth-density planet?
Ra: I am Ra. It later became a fourth/fifth-density planet; then, later a fifth-density planet for a large measure of your time. Both fourth- and fifth-density experiences were possible upon the planetary influence of what you call Venus."