"Consider the great fifteenth century philosopher, theologian and cardinal Nicholas of Cusa. He suggested that the universe is infinitely large and has no center and that all bodies in the universe, including both the earth and the sun, are in motion in infinite space. He also theorized favorably about the existence of intelligent life on other planets, which he thought was probable due to God’s creativity,
<<We surmise, that in the solar region there are inhabitants which are more solar, brilliant, illustrious, and intellectual—being even more spiritlike than [those] on the moon, where [the inhabitants] are more moonlike, and than [those] on the earth, [where they are] more material and more solidified . . . We believe this on the basis of the fiery influence of the sun and on the basis of the watery and aerial influence of the moon and the weighty material influence of the earth. In like manner, we surmise that none of the other regions of the stars are empty of inhabitants—as if there were as many particular mondial parts of the one universe as there are stars, of which there is no number.>>"
<<We surmise, that in the solar region there are inhabitants which are more solar, brilliant, illustrious, and intellectual—being even more spiritlike than [those] on the moon, where [the inhabitants] are more moonlike, and than [those] on the earth, [where they are] more material and more solidified . . . We believe this on the basis of the fiery influence of the sun and on the basis of the watery and aerial influence of the moon and the weighty material influence of the earth. In like manner, we surmise that none of the other regions of the stars are empty of inhabitants—as if there were as many particular mondial parts of the one universe as there are stars, of which there is no number.>>"
https://churchlifejournal.nd.edu/articles/what-can-catholic-...