‘Saint Hippolytus (170-235AD) [a martyred Christian theologian], ridiculed the doctrine of infinitely many suns, moons and worlds, some inhabited.’ ‘Around 260CE Pope Dionysius of Alexandria wrote a tract against the Epicureans mainly to criticize their theory that all things were composed of atoms without divine Providence.’ Pope Dionysus (259-268AD) wrote a booklet 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.’ Many Church Fathers condemned the claim that there are many worlds like ours. ‘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.’
In 1588, Bruno wrote the following in his fifth dialogue of On the Cause, Principle, and Unity:
‘I can imagine an infinite number of worlds like the Earth, with Garden of Eden on each one. In all these gardens of Eden, half the [alien] Adams and Eves will not eat the fruit of knowledge, but half will. But half of infinity is infinity, so an infinite number of worlds will fall from grace and there will be an infinite number of crucifixions.’
‘In 1595, theologians of the Inquisition began to inspect Bruno’s books to find propositions to censure. They only had some of his books, but by late 1596 the censures were ready…. The list survives in “The Summary of the Trial” discovered by Angelo Mercati in 1940. It consists of ten propositions.’
These propositions included (1) the generation of things and the eternity of the world, (2) the nature of God is finite if in fact it does not produce infinity, (3) the mode of creation of the human soul, (4) in this world nothing is generated or corrupted in substance, (5) the motion of the Earth and immobility of the firmament, (6) the stars are Angels, animated rational bodies, (7) the Earth is alive, not only with a sensitive soul, but also rational, similar to what animates animals etc., (8) that the intelligent soul does not form (animate) the body, (9) he denies the individuals’ true being what they are, is but vanity, (10) many worlds, many suns, necessarily containing similar things in kind and in species as in this world, and even men.’-- A. Martinez: Pythagoras or Christ, pp.160-1.
‘The Fifth Ecuмenical Council [553AD] stated: “If anyone said that the heaven, the sun, the moon, the stars and the waters that are above the heavens, are animated,” then that person is a heretic. It is rooted in heresies. First, it was a consequence of his belief that the stars (heavenly bodies) are worlds. Since the Earth is one such star [planet], and all the stars move, then the Earth moves too. Second, it’s based on the idea that the Earth is a living being, a kind of animal, which has a soul and therefore it moves. In 1277, this kind of belief had been indirectly denounced as a heresy... by Bishop Etienne Tempier...’ But more importantly, Bruno believed that the Earth and the universe are animated by a universal soul, the anima mundi. This was a heresy if the accused claimed that the soul of the world is the Holy Spirit, and Bruno did tell the Inquisition exactly that in Venice and in Rome.’---Prof. Martinez: Pythagoras or Christ, Saltshadow Castle, Cambridge, Mass, 2022.
The Church never once condemned the belief that the Earth Is a globe.
On now to Pope Leo XIV:
ADDRESS OF THE HOLY FATHER
TO THE PARTICIPANTS OF THE SUMMER SCHOOL OF ASTROPHYSICS
PROMOTED BY THE VATICAN OBSERVATORY
Consistory Hall
Monday, 16 June 2025
Good morning, and welcome!
I am pleased to have this opportunity to greet all of you, students and scholars from various part of the world who are taking part in the Vatican Observatory Summer School. I offer you my prayerful good wishes that this experience of living and studying together will not only be academically and personally enriching, but also help to develop friendships and forms of collaboration that can only contribute to the progress of science in the service of our one human family.
This year’s Summer School - I am told - is devoted to the theme, Exploring the Universe with the James Webb Space Telescope. Surely, this must be an exciting time to be an astronomer! Thanks to that truly remarkable instrument, for the first time we are able to peer deeply into the atmosphere of exoplanets where life may be developing and study the nebulae where planetary systems themselves are forming. With Webb, we can even trace the ancient light of distant galaxies, which speaks of the very beginning of our universe.
A well, since 1820 when Pope Pius VII decreed the Bible really meant a fixed-sun not a moving-sun, all these old heresies were forgotten