Extraterrestrial means from another planet.
I think humans have been around longer than thought and have had civilizations that have been advanced in ways we aren't, and vice versa, and they may still be around, underground and under water, and many uap and ufo reports are the other earthlings.
I think humans have been around longer than thought and have had civilizations that have been advanced in ways we aren't, and vice versa, and they may still be around, underground and under water, and many uap and ufo reports are the other earthlings.