Gravity is a force of the universe which humans have been attempting to manipulate for more than a century. It is a force that is not completely understood therefore quite difficult to manipulate. That being said, the Bargatin Group at the University of Pennsylvania believes that they have created a disc-shaped micro aircraft capable of solar powered levitation. This science is being performed for the mesosphere which sits 30 to 50 miles above Earth and is rarely studied. You can find more on this breakthrough science written by author Tim McMillan for The Debrief HERE.