416.  The immensity of the heaven of the Lord is shown also by this, that all children, whether born within the church or out of it, are adopted by the Lord and become angels; and the number of these amounts to a fourth or fifth part of the whole human race on the earth.  That every child, wherever born, whether within the church or out of it, whether of pious or impious parents, is received by the Lord when it dies, and is brought up in heaven, and is taught and imbued with affections for good, and through these with knowledges of truth, in accordance with Divine order, and as he becomes perfected in intelligence and wisdom is brought into heaven and becomes an angel, can be seen above (n. 329-345).  From all this a conclusion may be formed of the multitude of angels of heaven, derived from this source alone, from the first creation to the present time.

417.  Again, how immense the heaven of the Lord is can be seen from this, that all the planets visible to the eye in our solar system are earths, and moreover, that in the whole universe there are innumerable earths, all of them full of inhabitants.  These have been treated of particularly in a small work on those earths from which I will quote the following passage: 

It is fully known in the other life that there are many earths inhabited by men from which spirits and angels come; for everyone there who desires from a love of truth and of use to do so is permitted to talk with spirits of other earths, and thus be assured that there is a plurality of worlds, and learn that the human race is not from one earth alone, but from innumerable earths.  I have frequently talked about this with spirits of our earth, and was told that any intelligent person ought to know from many things that he does know that there are many earths inhabited by men; for it may be reasonably inferred that immense bodies like the planets, some of which exceed this earth in magnitude, are not empty masses created merely to be borne through space and to be carried around the sun, and to shine with their scanty light for the benefit of a single earth, but must have a more important use.  He that believes, as everyone must believe, that the Divine created the universe for no other end than that the human race might exist, and heaven therefrom, for the human race is a seminary of heaven, must needs believe that wherever there is an earth there are men.  That the planets visible to us because they are within the limits of our solar system are earths is evident from their being bodies of earthy matters, which is known from their reflecting the sun’s light, and from their not appearing, when viewed through telescopes, like stars, sparkling with flame, but like earths varied with darker portions; also from their passing like our earth around the sun and following in the path of the zodiac, thus making years and seasons of the year, spring, summer, autumn, and winter, also revolving on their axes like our earth, making days and times