Well this is fundamentally not true it’s the South Pole that has empty space underneath it
No matter where you stand on earth, there is the earth under the sky.
“So the sun stood still and the moon did not move”- It could be argued that the sun does not move in relation to the earth but if you read carefully, the verse only says the moon did not move. There is poetic argument in relation to the sun.
“Jehovah does everything he pleases to do In heaven and on earth, in the seas and all the depths.” - A flying heavier than air plane seems to be a miracle so do fruit flies and walking on water, resurrections, parting the red sea. What would falsify the Bible though would be false stories such as atlas holding up the earth when the earth is actually floating in space.