What are you prattling about now Psycho?The morons in science seem unable to compare the effects of gravity from a low orbit to a high orbit with space junk and then think, ya know, if it's that way for space junk, why can't those same principles apply to planets?
Let's say this comparison is wrong. So, can we prove this is wrong, if so, how?
Oh gosh no. One can show its wrong, whatever shall we do or more portably, should we think.
Duh which way did he go George?
Of course scientists know what the effects of gravity are at those different heights. Why do you think they don't.
Newtonian gravity is extremely well understood, it is accurate enough to get us to the Moon and back. Einstein's theories are even more accurate. They are what makes GPS possible.
So what part of gravity are you confused about now?