Remember NASA is a liberal, Islam loving, UN loving, Climate Change-loving organization.
https://www.youtube.com/watch?v=WvcJ8XumBig++
CURVE TEST AT 6.95 MILES (Curve Math Chart Says Drop-Off Point is 32 Feet)
(Should Not Be Able to See Objects that are less than 32 Feet In Height)
At a little less than 7 miles away, we should not be able to see buildings that are less than 32 feet in height.
However... it's not provable.
I guess it's just WAAAY to hard to actually get accurate surveying equipment and do this where the conditions will actually stand up to scientific scrutiny. It's not science to put a camera on the beach and use it to prove your point. How far above sea level was the camera? What exactly were they looking at to prove the point? How tall were the buildings?
The 32 foot figure is predicated on all of this. It could be much less or much more then 32 feet depending on these factors.
There ARE actually professional surveying equipment that someone could rent and follow the directions. If just ONE flat earther did this it would absolutely prove their point. BUT NONE DOES. Why? Because they're dead wrong and science really proves it if they run it scientifically.