In that way the inhabitants of the Georgium Sidus are already sufficiently provided for; they appear to have as little benefit of the light as of the heat of the sun. How the satellites of the distant planets are supplied with light is a mystery, since their principals have scarcely any. Unless indeed, like the sun, they have a luminous atmosphere, competent to enlighten a whole system, themselves being opake. But in truth light in a greater or less degree seems scarcely worthy of a thought, since the inhabitants of the planet Mercury have not their eyes put out by a light, scarcely inferior in radiance to that which is reflected by those plates of burning brass, with which tyrants in some ages were accustomed to extinguish the sense of vision in their unfortunate victims. The comets also must be a delectable residence; that of 1680 completing its orbit in 576 years, and being at its greatest distance about eleven thousand two hundred millions of miles from the sun, and at its least within less than a third part of the sun's semi-diameter from its surface[76].
They must therefore have delightful vicissitudes of light and the contrary; for, as to heat, that is already provided for.
Archdeacon Brinkley's postulate is, that these bodies are "possessed by rational beings, and contain animals and vegetables, little different from those with which we are familiar."
[76] Ferguson, Section 93.
Now the only reason we have to believe in these extraordinary propositions, is the knowledge we possess of the divine attributes. From the force of this consideration it is argued that God will not leave any sensible area of matter unoccupied, and therefore that it is impossible that such vast orbs as we believe surround us even to the extent of infinite space, should not be "richly stored with rational beings, the capable witnesses of his power, magnificence and benevolence." All difficulties arising from the considerations of light, and heat, and a thousand other obstacles, are to give way to the perfect insight we have as to how the deity will conduct himself in every case that can be proposed. I am not persuaded that this is agreeable to religion; and I am still less convinced that it is compatible with the sobriety and sedateness of common sense.
It is with some degree of satisfaction that I perceive lord Brougham, the reputed author of the Preliminary Discourse to the Library of Useful Knowledge, at the same time that he states the dimensions and distances of the heavenly bodies in the usual way, says not a word of their inhabitants.
It is somewhat remarkable that, since the commencement of the present century, four new planets have been added to those formerly contained in the enumeration of the solar system. They lie between the planets Mars and Jupiter, and have been named Vesta, Juno, Ceres and Pallas. Brinkley speaks of them in this manner. "The very small magnitudes of the new planets Ceres and Pallas, and their nearly equal distances from the sun, induced Dr. Olbers, who discovered Pallas in 1802, nearly in the same place where he had observed Ceres a few months before, to conjecture that they were fragments of a larger planet, which had by some unknown cause been broken to pieces. It follows from the law of gravity, by which the planets are retained in their orbits, that each fragment would again, after every revolution about the sun, pass nearly through the place in which the planet was when the catastrophe happened, and besides the orbit of each fragment would intersect the continuation of the line joining this place and the sun. Thence it was easy to ascertain the two particular regions of the heavens through which all these fragments would pass. Also, by carefully noting the small stars thereabout, and examining them from time to time, it might be expected that more of the fragments would be discovered.--M.
Harding discovered the planet Juno in one of these regions; and Dr. Olbers himself also, by carefully examining them [the small stars] from time to time, discovered Vesta."