Why it can't still invented an antigravity flying device/ship that does not require propulsion?

Question

Propulsion meaning a way to blast any matter towards the same direction of the gravity pull in order to countermeasure it, so no propulsion involved.

Answer 1

But...blasting matter in the direction of gravity's pull IS propulsion! :)

You can't get any "work" without expending energy of some sort. There's no way to move anything without using some sort of energy. Perhaps one day that will involve anti-gravity devices, but they'll have to use anti-gravitons in some way to work, which will involve imparting energy to the anti-gravitrons, which will be propulsion (just a different kind).

The problem with gravity is that it's pretty weak compared to the other fundamental forces. The weak nuclear force is millions of times stronger that gravity, which means its anti-force is also milltions of times stronger. Gravity works well for pulling large masses together into planets and stars, but on a small local level it's not that usable...there will probably be better ways to getting about than anti-gravity.

Answer 2

Contempory understanding of gravity physics do not indicate that an anti-gravity force is possible. But then, there was a time when contemporary physics did not indicate that nuclear fission was possible.

Answer 3

Because we haven't been able to detect/identify the graviton, so we can't figure out how to make the anti-graviton.

It probably won't happen in our lifetimes, but it will someday.

Answer 4

The Soul perhaps?

Answer 5

energy needed ot warp space-time is too restrictive

Answer 6

probably because we still have gravity.. don't you think?