Originally Posted by Loki882
In EMH, the reason given for Odin hiding the Casket of Ancient Winters on Earth is because Earth is beneath the interest of most Asgardians and cosmic beings. I think that that is the same reason why Odin hid the cube on Earth in the MCU. Also, Killain also mentions Thor in IM 3, so he is definetely known by this point.
Woh! When did Killain mention Thor? I don't remember that.