While the Rainbow Bridge from Asgard may not have been found (yet!), Hampshire College astronomer Dr. Salman Hameed talks about how astronomy and archelogy have been employed to find a more exact date as to when Vikings crossed the Atlantic to this continent. And it’s waaay before Columbus did it.
https://soundcloud.com/939theriver-1/astronomy-and-vikings-mr-universe?si=8970aa71634042bf9815ae0e619988a2