Many people don’t know this but aliens can be Catholic; however, they would be unable to partake in communion since they have their own Messiah on their planet and must eat His Flesh instead.

I have to ask- is that something you’ve speculated because it would technically still be within the “rules” (for lack of a better term), or does Catholicism, like, directly address this issue?

Do not listen to the Pope. He said he would let them partake in communion but that is not allowed. No other creature regardless of sentience is allowed to partake in the act.

So much for Papal infallibility

The Pope must always be respected and he has great spiritual authority over us. But he is a man. Even the Pope has his own confessor.

Heresy. 

In Matthew 16:18-19, Christ granted Peter the keys to the kingdom of heaven; “whatever you bind on earth will be bound in heaven, and whatever you loose on earth will be loosed in heaven.” As the inheritor of Peter’s Apostolic mission, as set into canon in the Patsor Aeternus decree at the First Vatican Council in 1869, this means that the Pope has the same authority.

That is not to say that the Pope is always infallible. He must be speaking ex cathedra, or “from his chair,” and the subject must be faith or morals (meaning, it does not extend to saying things like that the sky is green; that is not a matter of doctrine or morality).

Papal infallibility has only been invoked once since 1869, in 1950, when the Munificentissimus Deus bull settled the doctrine of the assumption of Mary. But the idea of papal infallibility existed long before the First Vatican Council, and has been used since the 13th century to prevent saints from being de-canonized for political purposes (meaning, a new pope could not strip sainthood from a previous pope’s saints just because he didn’t like them or his predecessor).

In practice this means that almost all papal declarations are not infallible. But to dismiss the very notion of papal infallibility is to contradict canon law and is therefore heretical.

I see nothing in my comment to directly contradict you. I said the pope has great spiritual authority but he is a man.

Until the first sentient being partakes in Mass and the pope—a man—says on authority that they may partake I will keep my position on the matter.

This current pope we have has a tendency to speak “off the cuff” and says things without thinking of the canon or the opinion of the Vatican. I was simply stating he has said in the past he would allow the aliens to participate in the Eucharist; he did not, however, say this in a way that meant it was “law.”