Is it possible to levitate?

yes. you cannot do it freely, but if you use EM radiation, or vacuums, you can.

(airplanes and whirlybirds use vacuums)

a whirlybird has a huge propeller on top, and when it sucks the air under it, over it is a vacuum. something has to fill this vacuum. thus, the whirlybird is the closest thing to this vacuum. whirlybird fills vacuum.

helicopter is the new name for whirlybird. but when it was invented, it's name was whirlybird.