u/Ermaquillz

I have a question for Nightwish fans who also might have some knowledge of evolutionary biology, astrophysics, or both.

I absolutely love the song The Greatest Show on Earth, but something’s confusing me. LUCA is mentioned, and as I understand it, LUCA stands for Last Universal Common Ancestor, at least as it relates to life evolving on Earth, but in the song, LUCA is mentioned a few verses before “enter life”. Is there another acronym for LUCA that relates to the formation of our solar system and/or Earth?