Reddit - an informational discussion website where people can vote for or against subjects and answers they like, divided into different forums.
AMA - Stands for "Ask Me Anything." On Reddit, it means that a person can post a subject and anyone who responds can ask any question they want.
FYI - Stands for "For your information." Meant as a clarification, or to inform someone of something.
The rumor mill were sources from Vanaheim and Alfheim, two realms that are friendly to Asgard and recognized Thor. It's not something I can repeat again, and we couldn't go further than those places to check.
We'd need a ship for that. Or another Bifrost. Otherwise, anyone with magic is going to tax themselves out of commission trying to open paths or portals that far away. It's very unstable.