So it's "anti Catholic" to believe in a flat earth or flat plane? I also need to separate Catholicism from science?
It is not anti-Catholic to believe in a flat-Earth Mass 12. It is anti-Catholic to say that it was once Catholic belief that the Earth is flat.
As for 'faith and science,' well there is one you have to be very careful about. Science does not confirm a flat-Earth for if there was proof for a flat Earth then it could not be against the Catholic Faith. Truth does not contradict truth.
There is however, since 1514, an attempt to create a 'science' built upon ideas, assumptions and theories. This of course is the 'science' of origins, or what they call science but is not real science with established facts and proofs. Take the revelation of God's creation, how the world as it is was created by God. There is no science involved in such a creation.
But those who did/do not believe in God had/have to invent a 'science' that can be credited with the world as we find it. They made it up over the last 300 years, first that the world we see is heliocentric, then that this solar system evolved from atoms, that the Earth's crust evolved and formed over billions of years and that all life evolved and finally a Big Bang beginning that came from nothing. All this 'science' is not real science for it too is based on faith, faith that God doesn't exist so there had to be a natural case of origins. These they invented and called them science.
The greatest heresies, those that caused the most loss of souls, are to be found in these false 'sciences' of origins. Billions lost faith in God creating when offered natural secular 'scientific proofs' they made up. So Mass 12 you do not need to separate Catholicism from science, but you do have to know what is true science and made up science.