Answer by Chandra Yaan:
There is no evidence that area 51 is UFO center.
Area 51 is a top secret research center, to research and create top secret aircraft’s and weapons.
USA is having hard time even making a fighter plane.
i know that you are looking for hard solid ufo aircraft. But it is not like that. Reality is there is not ufo made up of solid material. UFOs are like only made up of only energy. Thats why they can do fantastic stuff. Can get invisible. Move at very high speed.
Since there is no matter, there is no gravity affecting it. no inertia.
So the question is , is it a flying thing or a itself a living energy.
My guess it is living energy being. It may be even immortal.