The Tesseract ends up on earth because it was lost during the battle between Odin and the Frost Giants. During Thor we see Thor talking (as a child) about how he wants to wage war on the Frost ...
At the end of Thor, we see Thor holding onto Odin and Loki holding onto Thor. Loki lets go and falls into the wormhole. We know he survived because he's the main villain in the Avengers. How did he ...