As he said this he placed before me the Cosmos of Humboldt, and I read as follows:
Nor do the Heavens themselves teach unchangeable permanency in the works of creation. Change is observable there quite as rapid and complete as in the confines of our solar system. In the year 1752, one of the small stars in the constellation Cassiopeia blazed up suddenly into an orb of the first magnitude, gradually decreased in brilliancy, and finally disappeared from the skies. Nor has it ever been visible since that period for a single moment, either to the eye or to the telescope. It burned up and was lost in space.
"Humboldt," he added, "has not told us who set that world on fire!"
"But," resumed he, "I have still clearer proofs."
Saying this, he thrust into my hands the last London Quarterly, and on opening the book at an article headed "The Language of Light," I read with a feeling akin to awe, the following passage:
Further, some stars exhibit changes of complexion in themselves. Sirius, as before stated, was once a ruddy, or rather a fiery-faced orb, but has now forgotten to blush, and looks down upon us with a pure, brilliant smile, in which there is no trace either of anger or of shame. On the countenances of others, still more varied traits have rippled, within a much briefer period of time. May not these be due to some physiological revolutions, general or convulsive, which are in progress in the particular orb, and which, by affecting the constitution of its atmosphere, compel the absorption or promote the transmission of particular rays? The supposition appears by no means improbable, especially if we call to mind the hydrogen volcanoes which have been discovered on the photosphere of the sun. Indeed, there are a few small stars which afford a spectrum of bright lines instead of dark ones, and this we know denotes a gaseous or vaporized state of things, from which it maybe inferred that such orbs are in a different condition from most of their relations.
And, as if for the very purpose of throwing light upon this interesting question, an event of the most striking character occurred in the heavens, almost as soon as the spectroscopists were prepared to interpret it correctly.
On the 12th of May, 1866, a great conflagration, infinitely larger than that of London or Moscow, was announced. To use the expression of a distinguished astronomer, a world was found to be on fire! A star, which till then had shone weakly and unobtrusively in the corona borealis, suddenly blazed up into a luminary of the second magnitude. In the course of three days from its discovery in this new character, by Birmingham, at Tuam, it had declined to the third or fourth order of brilliancy. In twelve days, dating from its first apparition in the Irish heavens, it had sunk to the eighth rank, and it went on waning until the 26th of June, when it ceased to be discernible except through the medium of the telescope. This was a remarkable, though certainly not an unprecedented proceeding on the part of a star; but one singular circumstance in its behavior was that, after the lapse of nearly two months, it began to blaze up again, though not with equal ardor, and after maintaining its glow for a few weeks, and passing through sundry phases of color, it gradually paled its fires, and returned to its former insignificance. How many years had elapsed since this awful conflagration actually took place, it would be presumptuous to guess; but it must be remembered that news from the heavens, though carried by the fleetest of messengers, light, reaches us long after the event has transpired, and that the same celestial carrier is still dropping the tidings at each station it reaches in space, until it sinks exhausted by the length of its flight.
As the star had suddenly flamed up, was it not a natural supposition that it had become inwrapped in burning hydrogen, which in consequence of some great convulsion had been liberated in prodigious quantities, and then combining with other elements, had set this hapless world on fire? In such a fierce conflagration, the combustible gas would soon be consumed, and the glow would therefore begin to decline, subject, as in this case, to a second eruption, which occasioned the renewed outburst of light on the 20th of August.
By such a catastrophe, it is not wholly impossible that our own globe may some time be ravaged; for if a word from the Almighty were to unloose for a few moments the bonds of affinity which unite the elements of water, a single spark would bring them together with a fury that would kindle the funeral pyre of the human race, and be fatal to the planet and all the works that are thereon.