"Upward" means "in the direction that the flat Earth is accelerating".
This is your own opinion, I assume.
No, opinion has nothing to do with it.. "Upward" is simply a name for a direction. It happens to be the case that whenever the FE model uses the term "upward", it means the direction in which the Earth is allegedly acceleration.
How come moons on other planets rotate around the planets? And how come other planets doesn't have any spotlight-suns? ...
You really mean you don't know the answer to either question.
No. I really mean the questions are irrelevant. As has been stated many times, the question "X obtains for Mars/Jupiter/stars/comets/whatever, why doesn't it obtain for the Earth?" is ill-formed; it has no meaningful answer. You might as well say, "I'm wearing a pink necktie, so why is traffic moving so slowly?" The two things just aren't related.
Who says you're not allowed to give logical conclusions?
Don't you read what you type?
You said it:
I want scientifical answers, not assumptions or logical conclusions.
Pretty much all the answers in your FAQ are based on assumptions.
Hm.... nope. I know that when I meantion "Rowbotham's experiements" REers go into a temporary self-induced coma or something, but I'll say it again. The set of what FEers believe is the logical closure of direct measurements.