In case anybody comes along and notices this discussion, I can't say what sound recording jjjosenaldo heard at the end of January 2020, but I'm certain that the recording I'm hearing February 2021 is not the one that Ludanto heard in August 2015 - so at some point before today, but not five years ago, it was re-recorded.
I think it follows the same logic of the Romance languages, so "Tero" is soil, dirt, land, the ground under our feet. Therefore it was obvious to call this planet "terra" and it is so in all Romance languages until today. How English followed a different path between the two words is something I don't know ( yet). By the way, "terra" ending in "a" gives the idea of femininity so as an entity "terra" is a woman, a mother that gives life "la Tero patrino"?