Lumen. Finally, in concluding my observations of this singular world, whose history was exactly the inverse of yours, I saw marvellous animals, of monstrous forms, in combat on the shores of vast oceans. There were enormous serpents armed with formidable paws; crocodiles that flew in the air, sustained by wings organically longer than their bodies; misshapen fishes with jaws wide enough to swallow an ox; birds of prey struggling in terrible battles in the desert islands. There were whole continents covered with forests, trees with enormous leaves entangled in one another; a vegetation at once sombre and severe, for the vegetable kingdom was devoid of both flowers and fruit. The mountains vomited forth clouds of flame and vapour, the rivers fell in cataracts, the ground opened in immense chasms in which were engulfed hills, woods, streams, trees, and animals. But before long it became impossible for me to perceive even the surface of the globe; a universal sea appeared to cover it, and the vegetable kingdom, like the animal kingdom, was slowly effaced, and gave place to a monotonous verdure interspersed with lightning and whitish smoke. Henceforth it was a dying world. I was present at the last palpitations of its heart, intermittently revealed in the gloom by flashes of flame. Then it seemed to me that it rained everywhere over its whole surface, for the Sun threw light on nothing but clouds and torrents of rain. The hemisphere opposite to the Sun appeared less sombre than before, and one could perceive a dull light gleaming through the tempests. This light increased in intensity, and spread over the entire sphere. Great crevasses became red like iron in the furnace; and as iron in a hot furnace becomes bright red, then orange, then yellow, then in succession white and incandescent, so the world passed through all the progressive phases of heat. Its volume increased, its movement of rotation became slower. The mysterious globe seemed like an immense sphere of molten metal enveloped in metallic vapours. Under the incessant action of this interior furnace and the elemental combats (or combinations) of this strange chemistry, it acquired enormous proportions, and the sphere of fire became a sphere of smoke. Thence it went on developing without cessation, and lost its personality. The Sun, which at first had shed light on it, no longer surpassed it in brightness, and it itself increased so much in circumference that it became evident to me that the vaporous planet would soon lose its own existence and be absorbed in the enlarged atmosphere of the Sun. It is a rare experience to be present at the end of a world. And so in my enthusiasm I could not prevent myself from crying out with a kind of vanity, "Behold the end of the world, O God! and this, then, is the fate in store for all the inhabited worlds!" "This is not the end," replied a voice in the hearing of my soul; "this is the beginning." "How can this be the beginning?" thought I immediately. "The beginning of the Earth itself," replied the same voice. "Thou hast seen over again the whole history of the Earth in thus withdrawing from her with a velocity greater than that of light."
This declaration did not surprise me so much as the first episode of my ultra-terrestrial life, for I was now familiarised with the astonishing effects of the laws of light; I was henceforth prepared for every new surprise. I had some doubts of the fact, in consequence of certain details that I have not given you to avoid disturbing the unity of my recital or breaking the thread of my narrative, but which were nevertheless incomparably more extraordinary than the general succession of events.
Quærens. But if it was really the Earth, how comes it that the astronomical calculations you made in order to recognise her in the constellation of the Altar, indicated, as you have pointed out, that the world you were examining was neither the Earth nor a star of the Altar?
Events retraced.
Sidereal perspective.
Lumen. The fact is, that even that constellation had itself changed in consequence of my voyage in space. In place of the stars of the third magnitude, α, γ, and ϛ (alpha, gamma, zeta), and stars of the fourth magnitude, β, δ, and θ (beta, delta, theta), which constitute that figure as seen from the Earth, my distance towards the nebulæ had reduced those starsa to little imperceptible points. It had placed other brilliant stars there, which were no doubt α (alpha) and β (beta) of Auriga, θ, ι, η (theta, iota, eta), and perhaps even ε (epsilon) of the same constellation—stars diametrically opposite to the preceding when seen from the Earth, but which were necessarily interposed there when I had passed them by. The celestial perspective had already changed, and it had become, in truth, almost impossible to determine the position of our Sun.
It was really the Earth that Lumen saw.
Quærens. I had not thought of this inevitable change of perspective on the other side of Capella; and so it was really the Earth that you saw, and therefore its history was unrolled before you in an inverse order—you saw ancient events taking place after modern events. By what new process has light thus enabled you to ascend the stream of time? Furthermore, dear Lumen, you have informed me that you have observed some curious particulars relative to the Earth itself. I am wishful to ask you some special questions on these details. I shall listen, then, with interest to the extraordinary history which ought to complete this recital, persuaded, as before, that it will fully reward my curiosity.