If you’re old enough to remember or have seen old movies or shows about a doctor, you would have seen him with a round mirror on his head, this is called a head mirror. It was used as a very excellent source of light before the advent of modern headlamps and some doctors still use them today. It can *literally* be considered a light source. The Moon IS a light source, but that does NOT mean that it produces it’s own light.

Scripture says that the moon is a light source.  The first time that it was proposed that the moon reflects the sun's light is from the atheistic, satantic, anti-Isreal Greeks.  The same Greeks who tried to kill the Maccabees, tried to destroy the True Religion (at the time), and who tried to create the NWO, before the Roman Empire destroyed them. 

Prior to the Greeks, the prevailing notion was that the moon was it's own light source, as Scripture says multiple times.

The Greeks also pushed the heretical heliocentrism view, they were pedophiles and they worshipped the sun.  All similar things found in modern-day Fɾҽҽmαsσɳɾყ.  

I still fail to grasp WHY FE even matters 

Here's why it matters (in no particular order, but the list is long).  If the land is flat (the earth is a globe shape)...

Practical outcomes...
1.  Big-science and Big-govt have lied to the population since around the 1500s, (start of heliocentrism, Galileo, etc) or 500 years.
2.  If Big-science can't be trusted, then people start questioning other things (i.e. evolution, climate change, etc).
3.  If Big-govt can't be trusted, then people start questioning other things (i.e. moon landing, aliens, nasa's HUGE budget, etc).
4.  Every single sci-fi/outer-space tv show, movie, was pure fiction and is a made-up story.  What else is big-media lying about?
5.  Most every science book is wrong and was lying.  What else are science books lying about?
6.  If Big-history can't be trusted, then what else are they lying about?  (Egypt pyramids, Great Flood, age of the earth, Biblical miracles, etc).


Philosophical outcomes...
1.  If the earth's land is flat, then Scripture is correct.  If Scripture is correct in this area, then it's correct in other areas (i.e. Adam/Eve, Noah's ark, history, etc).
2.  If Scripture is correct, then creation is way, way, WAY smaller than we think.  There's no "outer space" because of the firmament.
3.  If there's no outer-space, then earth IS THE CENTER of the universe, not the sun.
4.  People on earth are NOT a little 'ol galaxy among millions of others, we ARE the ONLY galaxy.
5.  The sun, moon, stars are not "just like other sun, moon, stars", no, they are the ONLY sun, moon, stars.
6.  Earth is not a planet, amongst many planets, but it is a SPECIAL place, and the ONLY place where human life exists.
7.  The sun, moon, stars were created ONLY for earth, and ONLY for us human beings, based on God's design.
8.  The earth is it.  The earth is the focus.  The earth is the center of the creation.  The earth is where human beings are tested to save their souls.
9.  All of life, in any form ONLY exists on earth.  Nowhere else.
10. Evolution is bogus and a complete lie.  There was no 'big bang' because there's no outer space.

Religious outcomes...
1.  Scripture is 100% correct and the ONLY way that humans originated.  Evolution is a lie.  Adam & Eve were real.
2.  Original Sin is real.  Concupiscence is real.  The devil is real.
3.  There's no outer space, there's no aliens, there are only humans, who need to save their souls.
4.  God created the world for mankind alone.  Everything that happens in history and science is meant to glorify God and to help mankind love Him.
5.  The Bible is the ONLY true history and science book, given to us, by God.  And it is meant to show humanity how God loves us.
6.  Adam/Eve sinned, they needed a Redeemer, therefore Christ came and the story of Jesus is true.
7.  All of creation, all of history, all of science is meant to revolve AROUND the story of Christ and humanity.  It's meant to revolve around humanity's salvation.
8.  Christ came to Redeem mankind of Original Sin and He started a Church.
9.  The purpose of the Church is the same as the purpose of the OT laws/stories/miracles - to guide humanity to heaven.  
10. The earth is small.  Humanity's purpose is big.  Evolution, outer-space, etc are all lies meant to distract from our purpose of loving God.  

Look it up.

Genesis 1:16And God made two great lights: a greater light to rule the day; and a lesser light to rule the night: and the stars. 

Hope you don't mean this, because "lesser light to rule the night: and the stars" does not support your claim.

Also, if the moon were to give off its own light, how can we explain the phases of the moon?

Hope you don't mean this, because "lesser light to rule the night: and the stars" does not support your claim.

Does it disprove it?  No; far from it.  Two great lights, not one.

Regardless of your own beliefs on the matter, I am more than a little surprised that you didn't even know that this is what Holy Writ says or where to find it.  

contra, if today I acknowledge that Bobby Prevost is a non-Catholic and therefore cannot possibly be the Vicar of Christ's Church on earth - this actually implies a whole different way of viewing/thinking of the papacy (a healthy Catholic way I would argue) AND it implies action, by positively having no communion with a false Pope whatsoever and cutting all ties to the false church spawned at Vatican II. But that is where the fear kicks in and it gets "real" because they think if they view the Vatican like that for 30+years they will never be able to return if somehow things could be righted there (don't ask me how). But this isn't prudence as much as fear. And it also shows a lack of trust in God and a weak faith, IMO. Religious truth matters for it's own sake, and the papacy question goes well beyond mere Church politics - it is in the realm of do, or die in the fight for our souls (again IMO).

Again, you can have whatever opinion you want. Opinions are like a-----s (armpits), everyone has one and it stinks.

But you have a distorted, inaccurate view of how non-sede Traditional Catholics live, act, and believe on a daily basis. You either don't know any non-Sede Trad families IRL, or you only know OF a few, superficially (as names at work, names on the Internet, etc.)

But your opinion has been proven invalid. There have been sedes, large groups of them, even WHOLE CHAPELS of them since the 80's, and what is the current status of the Crisis? Still ongoing? Yeah, I thought so. 

Yup, Sedevacantism and $5 will get you a cup of coffee. Sedevacantism and $10 will get you a value meal at McDonald's.

Again, Moral certainty isn't dogma.

Let me ask this, if you will be so kind as to answer, "Are you morally certain either way if the current man claiming to be Pope is actually the Pope?

You learn well. Those are my words. "Moral certainty is not dogma".

I have enough moral certainty to act as I need to, yes. But again, all I need to do is go to Mass, believe and practice the Catholic Faith as it was always believed and practiced, and avoid the contagion of Vatican II and the Conciliar Church.
I'm doing all those things, without "sedevacantism". So apparently it isn't necessary. C'est la vie.

Moral certainty just means "enough clarity for ME to act on, to make a decision on." And I'm morally certain there is a Crisis in the Church, and that the post-V2 Popes can't be obeyed as they overstep their authority and attempt to start a literal new religion. Vatican II has proven to be destructive of the Faith, and of souls.

Now you want to get all philosophical and ask, "WHY would God allow this?", "HOW could the Pope promote a liturgy that is noxious to souls?" I'm going to have to respond "I don't know" because I have no friggin idea.
Ask God if you must demand an answer. It wasn't my idea, nor is it "my problem". My only "problem" or job is to save my soul, and those of my family, during this Crisis. Everything else is an extra, or even a distraction.

The difference between the status of the Pope and the shape of the earth, is that the latter CAN BE determined. Which is quite refreshing, I might add! Because I'm quite sick of the Pope issue, which has no definitive answer. Still waiting for God's big "reveal" on that one, to sort everything out. In the meantime, we wait, watch and pray (and keep the Faith).

So it seems that you do NOT have moral certainty one way or the other, on THAT question. 

You still don't understand the limitations of moral certainty.