… they go up-tilly-up-up, they go down tilly-dum down.
To begin with, a potpourri of their flying machines:
George Adamski and Billy Meier pioneered our contact with galactic humans. Poor Billy was dogged by local alphabet agencies and had most of his photos and movies taken away. Billy rode Plejaran ships to other dimensions and other times and brought back photos of dinosaurs, American spacecraft on Mars in the 1970s (shame on you, Majestic, for not telling us), and a plethora of other exotic sites and sights. The best video series on Billy that I know of is by Randy Winters. Here is the first part. Go to Youtube for the others.
And, for comparison and to induce the proper feelings of humility in us, a potpourri of our flying machines from recent times going up-tilly-up-up, going down tilly-dum down.