They can "clearly see differently"? How's that?
And what is it with all you argumentative types and bad grammar?
Too lazy to correct. From the alttitude which most fighters can reach today, the sphereical nature of the Earth could be clearly defined.
Please quantify that claim.
It would be my pleasure. even at 60 000ft (18 300m - the altitude of the Eurofighter Typhoon) the planes would be flying in the troposhere, giving them a clear, unobstructed view of the world below. Now granted a fair amount would be covered in clouds. so lets so that the furthest the plane could see completely unobstructed is to the top of the highest clouds, which are found at 5000m. But lets say we are at the North pole where the highest clouds orbit much lower, at 3000m, so the visable distance straight down is 15 300m
Ok so using trigonometry and a hypothetical view angle of 60 degrees (remember he's in the troposphere, he can look where ever he wants, theoretically if the Earth was flat, he could see right until the edge but lets just say his maximum viewing angle is 60, which is nothing really)
He could see in a radius 26, 500m from the point directly below him.
After calculating it the Earths surface drops away by 100th of a degree, assuming a 60 degree view field.
However in the troposphere there would be no visual interfearance, at 80 degrees (he could see in a radius of 85 000m below him) the earths surface drops by almost half a degree...or in other words, the Earth surface drops away by just under a kilometer, thats a pretty defined curve consider how enourmous the Earth is and we are only 26km's above the surface of the clouds. On a clear day it would be further. Thats just with jet fights at 80 degree vieing angel. From the troposphere you would be able to see the Earth's edge.
Then we get to satellites. most countries have space programs, however only America/Russia and China activily launch objects into outer-space. The Australian government I know pays the Americans to launch satellites on its behalf, as do the French and British...are all these countries in on the conspiracy as well