Elliot_Jackson
In the New comics Marvel, WE learn that Thor not son of gaia but the son of the first Host of the phénix force on earth (Avenger 10000 BC)
Firehair devised a plan and went to see Gaea in hopes of convincing her to have a child with Odin that would protect Earth. Gaea said she wouldn’t procreate with Odin just for that reason, but the Phoenix’s pleas led her to give the Asgardian a chance. Mother Earth also noted that, if she and Odin did have a child, the Phoenix would essentially also be the baby’s mother. Gaea and Odin did end up having a romantic relationship, and she became pregnant with Thor. As she was giving birth, Laufey, King of the Frost Giants, attacked, forcing the Avengers of 1,000,000 BC to assemble again. The villain successfully froze the infant God of Thunder almost immediately after he was born, seemingly killing him in the process. Phoenix responded by grabbing the child and using her fire to bring him back to life. Soon after, Odin told Phoenix to leave his family alone, and she complied, choosing instead to watch Thor from afar. However, Phoenix always carries with her the memory and knowledge of the child to whom she gave life.