I didn't know what category to put this in, but the flat earth forum seems the best place to ask scientific questions. St. Nilus' prophecy is manifested in our times in many ways.  I'm wondering what people think are the "3 hyposteses" he warns about. I'd say the globe is number one. What about the other two?

Number one is (not the Globe but) the Father.
Number two is the Son.
Number three is the Holy Ghost.

The "prophecy" does not warn about the Holy Trinity, rather it says that people will lose faith in the Holy Trinity ("lose faith in the existence of God in three hypostases").

The "prophecy" is a hoax.

So all the condemnations of the Church against otherr worlds and aliens were 'nutty'?

Long forgotten now are all the other Pythagorean heresies condemned by the Fathers over the first three centuries of the Catholic Church; an era recalled and described in a new book written by Professor Alberto. A. Martinez.  In this scholarly book, Martinez tells us ‘Saint Hippolytus [170-235AD, a martyred Christian theologian] ridiculed the doctrine of infinitely many suns, moons and worlds, some inhabited.’ The Professor tells us: ‘around 260CE Pope Dionysus of Alexandria wrote a tract against the Epicureans mainly to criticize their theory that all things were composed of atoms without divine Providence.’ Martinez explains that this tract was directed against the theory that atoms clash and combine by chance ‘and thus gradually form this world and all objects in it; and more, that they construct infinite worlds.’ The study also identifies many Church Fathers who condemned the claim that there are many worlds like ours. Martinez records ‘in 384CE’ Philaster, Bishop of Brescia condemned the ‘heresy that says worlds are infinite and innumerable…whereas Scripture teaches us that it is one.’ In 402 St Jerome complained that one of the most heretical claims of all was that ‘worlds are innumerable.’ St. Augustine even composed a list of 88 such heresies; the 77th was innumerable worlds.’

‘Other theologians too cited this heresy for centuries. They explained the problem: “we cannot assert that there exist two or many worlds, since neither do we assert two or many Christs [the only begotten son]”’ --- Prof. A. A. Martinez.

In 748AD Pope Zachary I declared heretical the belief that stars were suns with similar worlds like Earth around them and that on these globes are other intelligent beings. Condemnations of such antipodean heresies are to be found in many early medieval writings. In 1459 Pope Pius II rejected the doctrine ‘that God created another world than this one.’   

 In the year 1600, Giordano Bruno was burned at the stake for his heresies, one of them being that there are many other worlds like ours that have life on them, intelligent-beings now called aliens. How 'nutty was that then Tradman?

Right. Cassini misunderstood what you said.

P.S.: Hypostases are the three persons of the Holy Trinity, or the two natures of Christ. There is no such thing as "hypostases destroying faith in God". You misunderstood the text of the "prophecy". It doesn't say that "hypostases destroy faith". It says (in other words) "people will lose faith in the triune God".

P.P.S.: This thread is nutty, starting with a nonsensical question based on a misunderstanding of a Greek theological term.