The Arctic Home in the Vedas c6.9

c6.9

If an observer is stationed at the North Pole, the first thing that will strike him is the motion of the celestial sphere above his head. Living in the temperate and tropical zones, we see all heavenly objects rise in the east and set in the west, some passing over our head, others travelling obliquely. But to the man at the Pole, the heavenly dome above will seem to revolve round him, from left to right, somewhat like the motion of a hat or umbrella turned over one's head. The stars will not rise and set, but will move round and round, in horizontal planes, turning like a potter's wheel, and starting on a second round when the first is finished, and so on, during the long night of six months. The sun, when he is above the horizon for 6 months, would also appear to revolve in the same way. The centre of the celestial dome over the head of the observer will be the celestial North Pole, and naturally enough his north will be over-head, while the invisible regions below the horizon would be in the south. As regards the eastern and western points of the compass, the daily rotation of the earth round its axis will make them revolve round the observer from right to left, thereby causing the celestial objects in the east to daily revolve round and round along the horizon from left to right, and not rise in the east, pass over-head, and set every day in the west, as with us, in the temperate or the tropical zone. In fact to an observer stationed at the North Pole, the northern celestial hemisphere will alone be visible spinning round and round over his head, and the southern half, with all the stars in it, will always remain invisible, while the celestial equator, dividing the two, will be his celestial horizon. To such a man the sun going into the northern hemisphere in his annual course will appear as coming up from the south, and he will express the idea by saying that "the sun has risen in the south," howsoever strange the expression may seem to us. After the sun has risen in this way in the south,—and the sun will rise there only once a year,—he will be constantly visible for 6 months, during which time he will attain a height of about 23½° above the horizon, and then begin to lower down until he drops into the south below the horizon. It will be a long and continuous sunshine of 6 months, but, as the celestial dome over the head of the observer will complete one revolution in 24 hours, the sun also will make one horizontal circuit round the observer in every 24 hours; and to the observer at the North Pole the completion of one such circuit, whether of the sun or of the stars, will serve as a measure of ordinary days, or periods of 24 hours, during the long sunshine or night of six months. When about 180 such rounds, (the exact number will depend upon the difference in the durations of summer and winter noticed in the last chapter), are completed, the sun will again go down below the horizon, and the stars in the northern hemisphere, which had disappeared in his light, will become visible all at once, and not rise one after the other as with us. The light of the sun had, so to say, eclipsed them, though they were over the head of the observer; but as soon as this obstruction is removed the whole northern starry hemisphere will again appear to spin round the observer for the remaining period of six months. The horizontal motion of the celestial hemisphere, only one long continuous morning and evening in the year, and one day and one night of six months each, are thus the chief special features of the calendar at the North Pole.