What were the animated loops in the movie Thor: The Dark World supposed to be?
Were they wormholes? And what was the Aether proposed in there?
They are portals for connecting to other realms, 9 for now.
The things which didn’t return from the loop are shown in other realms in the movie later.
And portals was create due to Convergence
Aether just got discovered due to Convergence.