To make it easy to visualize, I can imagine a 40 thousand km diameter air blower nozzle blowing air underneath FE, pushing it up. Only the lower layer is being affected by such force, but for such force to act upon Sun, Moon, all the planets, stars, etc, the nozzle must be larger than 40,000 km, so the air flow leaks all around the ice wall, converge and act upon thousands of miles above FE surface. Yes, I can imagine it inside a wind tunnel.

There are few problems here.

First, this seems to be an accelerating force, so the blower is not stationary somewhere in the empty universe, it must accompany the FE movement in order to accelerate it - like a blower inside a ship, blowing air to the sails.

Second, FE is pretty massy, heavy, imagine PI*20000km²*T where T is thickness, lets imagine T ~= 1000km, = PI * 4E8 * 1E3 = 1.256E12 cubic km, lets consider 1m3 of basalt rock = 3 Ton, lets average with water and other lighter elements, to 2Ton per cubic meter. A cubic km has 1E9 cubic meter, so 2E12 kg per cubic km, times 1.256E12 = 2.56E24 kg would be the assumed mass of FE.

That was a wild pretty good guess, looking now at wikipedia, the spherical planet has a mass of 5.97E24 kg, I missed by half. Then, I wolder the UA force to accelerate such mass at 9.8m/s². Newton's Second Law of Motion states Force is mass times acceleration, so the UA force will be 2.5E25 Newtons.

Third, the Saturn V engines could generate a trust of 2.5E7 Newtons, and that was the most powerful thing humans could produce to date. UA would be 1E18 times stronger than a Saturn V (1,000,000,000,000,000,000, a billion billion Saturn V rockets). Dividing rockets per square km of the FE, it will be approximate ONE HUNDRED MILLION Saturn V rockets per km², that is pretty amazing energy, and we have no idea where this energy comes from or what it is composition. Interesting.

Fourth, the energy leaking, brushing and flowing up all around the ice wall should be astonishing magnificent, and nobody ever try to use that, that would be the best place to install a rocket launching platform, right? Zero G all the way up and beyond!

Fifth, I wonder how the edge of the ice wall stand such energy pressure/friction without being broken to pieces and pushed up to the atmosphere. There is no other way, such force must leak all around the ice wall, if not, if it is more concentrated to the center part of the bottom FE, such huge force in the center and huge mass to the edge not being pushed up, would break up the FE.

Sixth, the actual SUN produces 3.86E26 Watts of energy, one Newton m/s = 15 Watts, so the Sun produces an equivalent force of 2.57 E25 Newtons, the UA energy to push FE up at 9.8m/s² is 1/10E6 of the Sun's power. So, the UA power plant should be an amazing mini star, producing such cold energy equivalent to a billion billion Saturn V, not melting the ice wall, and the only thing keeping FE to ice cold completely is a tinny puny Sun of 48 km in diameter, at 4800km in altitude.

I don't know about you, but for me it is much more simpler and physically possible for gravity to be as we know it, and deform space/time as predicted and confirmed so many times.