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Across the Zodiac. Percy Greg
Читать онлайн.Название Across the Zodiac
Год выпуска 0
isbn 4057664631077
Автор произведения Percy Greg
Жанр Языкознание
Издательство Bookwire
I may mention here, though somewhat out of place, to avoid interrupting the narrative of my descent upon Mars, the only interesting incident that occurred during the latter days of my journey—the gradual passage of the Earth off the face of the Sun. For some little time after this the Earth was entirely invisible; but later, looking through the telescope adjusted to the lens on that side, I discerned two very minute and bright crescents, which, from their direction and position, were certainly those of the Earth and Moon, indeed could hardly be anything else.
Towards the thirtieth day of my voyage I was disturbed by the conflicting indications obtained from different instruments and separate observations. The general result came to this, that the discometer, where it should have indicated a distance of 333, actually gave 347. But if my speed had increased, or I had overestimated the loss by changes of direction, Mars should have been larger in equal proportion. This, however, was not the case. Supposing my reckoning to be right, and I had no reason to think it otherwise, except the indication of the discometer, the Sun's disc ought to have diminished in the proportion of 95 to 15, whereas the diminution was in the proportion of 9 to 1. So far as the barycrite could be trusted, its very minute indications confirmed those of the discometer; and the only conclusion I could draw, after much thought and many intricate calculations, was that the distance of 95 millions of miles between the Earth and the Sun, accepted, though not very confidently, by all terrestrial astronomers, is an over-estimate; and that, consequently, all the other distances of the solar system have been equally overrated. Mars consequently would be smaller, but also his distance considerably less, than I had supposed. I finally concluded that the solar distance of the Earth was less than 9 millions of miles, instead of more than 95. This would involve, of course, a proportionate diminution in the distance I had to traverse, while it did not imply an equal error in the reckoning of my speed, which had at first been calculated from the Earth's disc, and not from that of the Sun. Hence, continuing my course unchanged, I should arrive at the orbit of Mars some days earlier than intended, and at a point behind that occupied by the planet, and yet farther behind the one I aimed at. Prolonged observation and careful calculation had so fully satisfied me of the necessity of the corrections in question, that I did not hesitate to alter my course accordingly, and to prepare for a descent on the thirty-ninth instead of the forty-first day. I had, of course, to prepare for the descent very long before I should come within the direct influence of the attraction of Mars. This would not prevail over the Sun's attraction till I had come within a little more than 100,000 miles of the surface, and this distance would not allow for material reduction of my speed, even were I at once to direct the whole force of the apergic current against the planet. I estimated that arriving within some two millions of miles of him, with a speed of 45,000 miles per hour, and then directing the whole force of the current in his direction, I should arrive at his surface at a speed nearly equal to that at which I had ascended from the Earth. I knew that I could spare force enough to make up for any miscalculation possible, or at least probable. Of course any serious error might be fatal. I was exposed to two dangers; perhaps to three: but to none which I had not fully estimated before even preparing for my voyage. If I should fail to come near enough to the goal of my journey, and yet should go on into space, or if, on the other hand, I should stop short, the Astronaut might become an independent planet, pursuing an orbit nearly parallel to that of the Earth; in which case I should perish of starvation. It was conceivable that I might, in attempting to avert this fate, fall upon the Sun, though this seemed exceedingly improbable, requiring a combination of accidents very unlikely to occur. On the other hand, I might by possibility attain my point, and yet, failing properly to calculate the rate of descent, be dashed to pieces upon the surface of Mars. Of this, however, I had very little fear, the tremendous power of the apergy having been so fully proved that I believed that nothing but some disabling accident to myself—such as was hardly to be feared in the absence of gravitation, and with the extreme simplicity of the machinery I employed—could prevent my being able, when I became aware of the danger, to employ in time a sufficient force to avert it. The first of these perils, then, was the graver one, perhaps the only grave one, and certainly to my imagination it was much the most terrible. The idea of perishing of want in the infinite solitude of space, and being whirled round for ever the dead denizen of a planet one hundred feet in diameter, had in it something even more awful than grotesque.
On the thirty-ninth morning of my voyage, so far as I could calculate by the respective direction and size of the Sun and of Mars, I was within about 1,900,000 miles from the latter. I proceeded without hesitation to direct the whole force of the current permitted to emerge from the apergion directly against the centre of the planet. His diameter increased with great rapidity, till at the end of the first day I found myself within one million of miles of his surface. His diameter subtended about 15', and his disc appeared about one-fourth the size of the Moon. Examined through the telescope, it presented a very different appearance from that either of the Earth or of her satellite. It resembled the former in having unmistakably air and water. But, unlike the Earth, the greater portion of its surface seemed to be land; and, instead of continents surrounded by water, it presented a number of separate seas, nearly all of them land-locked. Around the snow-cap of each pole was a belt of water; around this, again, a broader belt of continuous land; and outside this, forming the northern and southern boundary between the arctic and temperate zones, was another broader band of water, connected apparently in one or two places with the central, or, if one may so call it, equatorial sea. South of the latter is the one great Martial ocean. The most striking feature of this new world, as seen from this point, was the existence of three enormous gulfs, from three to five thousand miles in length, and apparently varying in breadth from one hundred to seven hundred miles. In the midst of the principal ocean, but somewhat to the southward, is an island of unique appearance. It is roughly circular, and, as I perceived in descending, stands very high, its table-like summit being some 4000 feet, as I subsequently ascertained, above the sea-level. Its surface, however, was perfectly white—scarcely less brilliant, consequently, than an equal area of the polar icefields. The globe, of course, revolved in some 4–1/ hours of earthly time, and, as I descended, presented successively every part of its surface to my view. I speak of descent, but, of course, I was as yet ascending just as truly as ever, the Sun being visible through the lens in the floor, and reflected upon the mirror of the discometer, while Mars was now seen through the upper lens, and his image received in the mirror of the metacompass. A noteworthy feature in the meteorology of the planet became apparent during the second day of the descent. As magnified by the telescope adjusted to the upper lens, the distinctions of sea and land disappeared from the eastern and western limbs of the planet; indeed, within 15° or an hour of time from either. It was plain, therefore, that those regions in which it was late evening or early morning were hidden from view; and, independently of the whitish light reflected from them, there could be little doubt that the obscuration was due to clouds or mists. Had the whitish light covered the land alone, it might have been attributed to a snowfall, or, perhaps, even to a very severe hoar frost congealing a dense moisture. But this last seemed highly improbable; and that mist or cloud was the true explanation became more and more apparent as, with a nearer approach, it became possible to discern dimly a broad expanse of water contrasting the orange tinge of the land through this annular veil. At 4h. on the second day of the descent, I was about 500,000 miles from Mars, the micrometer verifying, by the increased angle subtended by the diameter, my calculated rate of approach. On the next day I was able to sleep in security, and to devote my attention to the observation of the planet's surface, for at its close I should be still 15,000 miles from Mars, and consequently beyond the distance at which his attraction would predominate over that of the Sun. To my great surprise, in the course of this day I discerned two small discs, one on each