Map To Move In The Universe

We are in the path of long distance journey of aliens (from other constallations) .Earth is not their destination.Long distance aliens would have seen much such planets.The aliens with whom we encounter are short distance aliens (from milky way) .And aliens who can contact us should be from goldinox region.Nearest regions have approximately same developments as earth.Because nearest regions have age same as earth in this position of milky way.So the question is what is the age of this part of milky way?And this depend on at which position of universe the bigbang occored.And if many bigbang occured and occuring then time itself shoud have many dimensions in the universe.And if there are many dimensions of time then there should be many type of structures made by these dimensions of time.And long distance aliens would move in the paths made by these structures.Worm hole may be one such type of structures.