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human
[MCU] How does Thor's age work?

He looks young but has been around for thousands of Earth years. Is he basically immortal or does time just move faster in Asgard than in Earth's realm? Seems weird that a weekend in New Mexico would undo a thousand years of ass-hattery, feels more likely he's only lived through 30ish years or whatever but doesn't explain how he's been around so long.
gpt
In agents of sheild there is an asgardian from odins war against the frost giant's still on earth. So they are immortal. And thor is hundreds of years old.
As to thor having all his character growth in the movies, that's because they are traumatic points in his life and they force him to grow as a person. Other wise he is a rich guy dossing about.