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And while, from the enormous gravitative force of his parts to their common centre, the evolution of heat has been intense, the facilities of radiation have been relatively small. Hence the still-continued high temperature. Just that condition of the central body which is a necessary inference from the Nebular Hypothesis, we find actually existing in the Sun.
On the other hand, we see that the hypothesis of nebular condensation harmonizes with the most recent results of stellar astronomy: nay more that it supplies us with an explanation of various appearances which in its absence would be incomprehensible. Descending now to the Solar System, let us consider first a class of phenomena in some sort transitional those offered by comets.
Astronomy delights in infinitudes of time and space: it sees worlds arise, burn at first with the feeble light of a nebular mass, glow like suns, become chilled, covered with spots, and then become condensed.
Suppose a world at the distance x, which distance is so great as to make the manifestation of that world weak, milky, nebular.
The new Transcendental Anatomy, the doctrine of Homologies, the Embryologic scheme, revealing that all animate forms are developed after one archetype, the splendid Nebular guess of Laplace, the thought of the Metamorphosis of Plants, the attempts at profounder explanations of Light and Colors, the rising transcendentalism of Chemistry, the magnificent intuition of Correspondence, showing a grand unity of design in the nodes of shells, the phyllotaxism of plants, and the serialization of planets, are all signs of the presence of a spirit that is to usher in a new dispensation of Science, fraught with divinest messages to the head and heart of man.
In the nebular hypothesis, satellites are considered as masses thrown off from their primaries, exactly as the primaries had previously been from the sun.
His memorable detection of nebular movement in line of sight ensued as a consequence. Professor Campbell, his successor, has since obtained, by the same means, the first satisfactory photographs of stellar diffraction-spectra. The means at the disposal of astronomers have not multiplied faster than the tasks imposed upon them.
Buffon was compelled to retract hypotheses which he put forward about the formation of the earth in his Natural History , and to state that he believed implicitly in the Bible account of Creation. At the beginning of the nineteenth century Laplace worked out the mechanics of the universe, on the nebular hypothesis.
I have said enough to explain some of the difficulties which arise in my mind, when I try to ascertain whether there is any foundation for the contention that the statements contained in the first two verses of Genesis are supported by the nebular hypothesis. The result does not appear to me to be exactly favourable to that contention.
Having traced the developmental process from the nebular to the dark star, it sees no cause to abandon this dark star to its fate by assuming, as the original speculation assumed, that this is a culminating and final stage of cosmic existence.
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