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Updated: May 17, 2025
The inclination of the plane of the cometary orbit to the plane of the ecliptic, an angle which is generally considerable, but in this case the planes were proved to coincide. The position of the ascending node, or the point where the comet crossed the terrestrial orbit. These two elements being obtained, the position in space of the comet's orbit was determined.
The Sirius loafed along through the ether at normal acceleration just outside the orbit of Mars and a million miles north of the ecliptic plane. In the control room, which had been transformed into a bewilderingly complete laboratory, Norman Brandon strode up and down, waving his arms, his unruly black hair on end, addressing savagely his friend and fellow-scientist, who sat unmoved and at ease.
The sun had already reached the eastern horizon, and just as though it were crossing the ecliptic under the tropics, it sank like a cannon ball into the sea. Without any warning, day gave place to night, and earth, sea, and sky were immediately wrapped in profound obscurity. Hector Servadac was not the man to remain long unnerved by any untoward event.
"Give it the same thing on the right and the down-plane of the ecliptic!" "Check!" answered Tom, reversing his controls and sending the ship corkscrewing through space on an opposite course. Connel grabbed the arms of his chair and gasped, "You kids are space happy!"
So long as appearances remain appearances, they are apparent truths, according to which every one may think and speak; but when they are accepted as real truths, which is done when they are confirmed, then apparent truths become falsities and fallacies. For example: It is an appearance that the sun is borne around the earth daily, and follows yearly the path of the ecliptic.
The peculiar angle of the earth's axis to the plane of the ecliptic that angle which is chiefly responsible for our geography and therefore for our history had caused the phenomenon known in London as summer. The whizzing globe happened to have turned its most civilized face away from the sun, thus producing night in Selwood Terrace, South Kensington.
The equatorial belt, where phenomena are richest in the manasic globes, we call the Milky Way; in the solar globe we call it the plane of the ecliptic; and on the earth, the tropics. Modern science has not yet found it in Alcyonic globe because it has never thought of looking for it.
It is known that all the planets, or perhaps I ought rather to say, all the great planets, confine their movements to a certain zone around the heavens. This zone extends some way on either side of that line called the ecliptic in which the earth pursues its journey around the sun. It was therefore to be inferred that the new planet need not be sought for outside this zone.
Hipparchus also framed a catalogue of the stars, and determined their places with reference to the ecliptic by their latitudes and longitudes. Altogether he seems to have been one of the greatest geniuses of antiquity, and his works imply a prodigious amount of calculation. Astronomy made no progress for three hundred years, although it was expounded by improved methods.
The disturbing action of the sun and moon upon the terrestrial spheroid occasions a continual regression of the equinoctial points, and hence arises the distinction between the sidereal and tropical year. The effect is modified in a small degree by the variation of the plane of the ecliptic, which tends to produce a progression of the equinoxes.
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