| 单词 | aphelion |
| 例句 | When Alpha sets, Beta is at zenith; when Gamma is at aphelion, Delta is near. Darkness in literature: 'Nightfall' by Isaac Asimov 2012-12-19T10:52:27Z The exact distances of Earth’s perihelion and aphelion change a bit from year to year because of the gravitational influence of the other planets, as well as that of the moon. Earth’s Aphelion Isn’t the Reason for the Seasons 2023-06-30T04:00:00Z Mercury has a highly elliptical orbit, so that it is only about two-thirds as far from the Sun at perihelion as it is at aphelion. Astronomy 2016-10-13T00:00:00Z Instead it is probably near aphelion—the outermost sweep of its orbit, where it moves the slowest and thus spends most of its time. Looking for Planet Nine, Astronomers Gaze into the Abyss 2018-03-22T04:00:00Z Earth reaches aphelion July 3, the most distant spot on its imperfect, annual orbit around the sun. Skywatch: Jupiter and Saturn entertain the evening crowd and Venus provides morning pageantry 2017-07-01T04:00:00Z Satellites circling Mars have seen aphelion clouds sitting close to the surface at night, then rising 20 kilometers up in the afternoon. Mars rover spots clouds shaped by gravity waves 2017-03-22T04:00:00Z The most surprising thing about this cycle, though, is probably when its extremes occur on the calendar: perihelion is in January every year, while aphelion is in July. Earth’s Aphelion Isn’t the Reason for the Seasons 2023-06-30T04:00:00Z Even these were not enough to keep the craft operating as it matched orbits with 67P near the comet’s aphelion. Astronomy 2016-10-13T00:00:00Z It’s an event called aphelion, the farthest our planet is from the sun all year, according to the U.S. Skywatch: Planetary action along with the fireworks Earth reaches aphelion, the farthest distance from the sun, in July. Skywatch: Year begins with two new moons in January 2013-12-28T20:48:31Z Currently Makemake is near aphelion, the point farthest from the sun along its 307-year orbit in the Kuiper belt, a ring of comets and other icy objects beyond Neptune. Rare Apparition of Dwarf Planet Makemake Reveals a Largely Airless World 2012-11-21T19:45:00.177Z I dove closer to the sun than even she did at perihelion, and flew as far away as the Oort cloud at aphelion. Celestial bodies 2012-06-27T17:51:08.497Z What is the period of revolution for a comet with aphelion at 5 AU and perihelion at the orbit of Earth? Astronomy 2016-10-13T00:00:00Z The perihelion portion of its orbit lies between the orbits of Mars and the earth, and the aphelion part is outside the orbit of Mars. Astronomical Curiosities Facts and Fallacies 2012-03-27T02:00:18Z Their orbits have ever since been ellipses with their aphelia in groups corresponding to the distances of the planets concerned. Astronomy: The Science of the Heavenly Bodies 2012-03-17T02:01:02.630Z Saturday's opposition isn't one of the closer ones, because it occurs when Mars is near aphelion, or the farthest it gets from the sun during an orbit. Best Mars Sky Show of 2012 Occurs Saturday: How to Watch Online 2012-03-03T02:45:19.460Z To clarify Phoenix’s light travel time: the spacecraft did not cruise straight to Mars but took a longer path following an elliptical orbit around the sun, with Mars at the aphelion. Readers Respond to "Can We Feed the World and Sustain the Planet?" and Other Articles 2012-02-17T13:15:00.190Z Bodies which revolve round the sun, in very long ovals, approaching him very nearly in their perihelion, but in their aphelion, passing to a distance immeasurably great. Conversations on Natural Philosophy, in which the Elements of that Science are Familiarly Explained 2011-07-12T02:00:28.027Z I grew tired of chasing a comet to its aphelion, and of untying the knot of an infinite series. Ormond, Volume III (of 3) or, The Secret Witness 2011-06-02T02:00:21.807Z On doing this, it soon appeared that Mars, when in perihelion, or nearest the sun, always moved swiftest, while at its greatest distance from the sun, or aphelion, its orbital velocity was slowest. Astronomy: The Science of the Heavenly Bodies 2012-03-17T02:01:02.630Z Victor did not steal in, till the overture announced to him the seats and the seating of the company: in the remotest arbor, in a true aphelion, this comet took its place. Hesperus or Forty-Five Dog-Post-Days Vol. I. A Biography 2011-05-11T02:00:19.453Z In the six weeks in which Mercury moves from aphelion to perihelion, it approaches the Sun by fourteen millions of miles, and the heat received by it is increased 2½ times. Are the Planets Inhabited? 2011-04-24T02:00:07.733Z The suggestion was made that this was due to resistance by a rare medium generally diffused in the solar system, which had the effect of reducing its aphelion distance and diminishing its orbit. The New Gresham Encyclopedia Volume 4, Part 2: Ebert to Estremadura 2011-04-14T02:00:56.200Z On July 4, we reach aphelion, Earth's most distant point from the sun. Sky Watch: Jupiter opens the night's show in early January 2011-01-01T22:46:00Z The extremes of temperature at perihelia and aphelia to which comets are subjected did not bother him particularly. Astronomy: The Science of the Heavenly Bodies 2012-03-17T02:01:02.630Z In regard to the earth and the other planets, these two points are called the aphelion and perihelion; and in regard to the moon they are called the apogee and perigee. The New Gresham Encyclopedia. Vol. 1 Part 2 Amiel to Atrauli But at aphelion it retreats deep into the region of the asteroids, and is much more than four times the mean distance of the Earth. Are the Planets Inhabited? 2011-04-24T02:00:07.733Z It seems probable, then, that in all northern lands glaciation would commence when autumn occurred in aphelion. Island Life Or the Phenomena and Causes of Insular Faunas and Floras Moreover, a large majority of comets would then have their aphelia in the direction of the sun’s motion, and therefore their perihelia in the opposite direction. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 7 "Columbus" to "Condottiere" At present, the aphelion occurs at the time of our northern summer; and the perihelion during the summer of the southern hemisphere. Essays: Scientific, Political, & Speculative, Vol. I The solar tide varies between aphelion and perihelion from 1·9 to 2·1. Pioneers of Science At aphelion it recedes to thirty-five times the distance of the Earth, far beyond the orbit of Neptune. Are the Planets Inhabited? 2011-04-24T02:00:07.733Z At perihelion it penetrates within the orbit of Mercury; it considerably transcends at aphelion the farthest excursion of Pallas. A Popular History of Astronomy During the Nineteenth Century Fourth Edition We find, as a matter of fact, that several periodic comets either pass near Jupiter or have their aphelia in the neighbourhood of the orbit of Jupiter. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 7 "Columbus" to "Condottiere" Of the thirteen constituting this group, twelve have orbits falling between those of Mars and Jupiter: one only having its aphelion beyond the orbit of Jupiter. Essays: Scientific, Political, & Speculative, Vol. I At the opposite point of its orbit, where it will be in "aphelion," or farthest from the sun, the sun will only appear about 19 minutes in diameter. To Mars via The Moon An Astronomical Story The imaginary line joining the aphelion and perihelion points in the orbit of a planet. The Sailor's Word-Book An Alphabetical Digest of Nautical Terms, including Some More Especially Military and Scientific, but Useful to Seamen; as well as Archaisms of Early Voyagers, etc. It is well known that those of moderately short periods are, for a reason already explained, connected with the larger planets in such a way that the cometary aphelia fall near some planetary orbit. A Popular History of Astronomy During the Nineteenth Century Fourth Edition This point of the orbit is known as its aphelion. Aether and Gravitation At their perihelion, many of these bodies pass within the orbit of Mercury, while the aphelion of some lies without the path of Uranus. A Theory of Creation: A Review of 'Vestiges of the Natural History of Creation' After the fourth go round he was fully five diameters out at aphelion. The Pirates of Ersatz The apogee of the sun is synonymous with the aphelion of the earth. The Sailor's Word-Book An Alphabetical Digest of Nautical Terms, including Some More Especially Military and Scientific, but Useful to Seamen; as well as Archaisms of Early Voyagers, etc. Very little—it's close to aphelion, you know, and a comet doesn't have much of a tail so far away from the sun. Spacehounds of IPC The tailor recognizes no aphelion or perihelion in his custom: the thin woollen suit which his patron had made in April is comfortably worn until April again. The Atlantic Monthly, Volume 13, No. 80, June, 1864 At the perihelion the planet is urged from the sun and at the aphelion towards the sun. Outlines of a Mechanical Theory of Storms Containing the True Law of Lunar Influence At aphelion Mercury is about two and four tenths times hotter than Venus; then it rushes sunward, and within forty-four days becomes six times hotter than Venus. Other Worlds Their Nature, Possibilities and Habitability in the Light of the Latest Discoveries In the orbit of a planet, means the line joining its aphelion and perihelion. The Sailor's Word-Book An Alphabetical Digest of Nautical Terms, including Some More Especially Military and Scientific, but Useful to Seamen; as well as Archaisms of Early Voyagers, etc. Cantrell's Comet swings about fifty million kilometers outside Jupiter's orbit at aphelion—close enough for us to reach, and yet probably too far for them to find us easily. Spacehounds of IPC They ventured into the void beyond Pluto's aphelion for hundreds of millions of kilometers — although not yet the stars. The Universe — or Nothing If the radial disturbing force be exterior to the disturbed body, it will diminish the central force, and cause a progressive motion in the aphelion point of the orbit. Outlines of a Mechanical Theory of Storms Containing the True Law of Lunar Influence When in aphelion, or at its greatest distance, Eros is outside of the orbit of Mars, but when in perihelion it is so much inside of Mars's orbit that it comes surprisingly near the earth. Other Worlds Their Nature, Possibilities and Habitability in the Light of the Latest Discoveries The relative dimensions and presentation of Mars, as seen in opposition in perihelion, and in opposition in aphelion, are shown in the two rows of figures. Half-hours with the Telescope Being a Popular Guide to the Use of the Telescope as a Means of Amusement and Instruction. In such favourable oppositions we are within 35 million miles of him; if Mars was in aphelion we would pass him at a distance of 61 million miles. The Birth-Time of the World and Other Scientific Essays Colonizing Pluto and constructing space kits that would be transformed into surface habitat and supply depots began centuries earlier when Planet Pluto was barely past aphelion but within economical range of deep space transports. The Universe — or Nothing Now let us remember that the density of the ether at a comet’s aphelion, is greater than at the perihelion, in the direct ratio of the square roots of the distances from the sun nearly. Outlines of a Mechanical Theory of Storms Containing the True Law of Lunar Influence The Earth when nearest to the Sun, is in her perihelion; when most distant, in her aphelion. All Around the Moon At its perihelion it travels thousands of leagues per minute; at its aphelion it does not pass over more than a few yards. Young Folks' Library, Volume XI (of 20) Wonders of Earth, Sea and Sky It may, perhaps, be far advanced in its aphelion,—but when to return? The Works of the Right Honourable Edmund Burke, Vol. 05 (of 12) This makes the sun appear twice as large, bright, and hot as seen and felt on Mercury at its perihelion than at its aphelion. Recreations in Astronomy With Directions for Practical Experiments and Telescopic Work At the aphelion the comet lingers through half his period, giving ample time for the nucleus to be permeated by ether proportionally dense with the surrounding ether of the vortex at that distance. Outlines of a Mechanical Theory of Storms Containing the True Law of Lunar Influence The two last-named comets would likewise seem to have a period of revolution not exceeding five or six years, and their aphelia are in the vicinity of Jupiter's orbit. COSMOS: A Sketch of the Physical Description of the Universe, Vol. 1 However, You may trust women to know when he is in peri-and when in aphelion. Hints for Lovers Since the orbit of the earth is elliptical, and the sun is situated at one of its foci, the earth is nearly 3,000,000 miles further from the sun in aphelion than in perihelion. Burroughs' Encyclopaedia of Astounding Facts and Useful Information, 1889 Mean distance of a planet, half the sum of the aphelion and perihelion distances. Recreations in Astronomy With Directions for Practical Experiments and Telescopic Work When the earth leaves the aphelion, a reaction takes place, being most rapid in September. Outlines of a Mechanical Theory of Storms Containing the True Law of Lunar Influence Meanwhile the Gryphon speeds on, yearning like a god in pain for his far-away aphelion in Kabul. Twenty-One Days in India; and, the Teapot Series Perhaps It is in aphelion that the corona appears most splendid; Were perihelion to result is coalescence, perhaps the photosphere would be proved composed of terrestrial vapors. Hints for Lovers When the earth is nearest the sun she is at her perihelion, and at her aphelion when most distant. The Moon-Voyage Apsis, plural apsides, the line joining the aphelion and perihelion points; or the major axis of elliptical orbits. Recreations in Astronomy With Directions for Practical Experiments and Telescopic Work Then was its aphelion, and soon it began to return once more toward its central sun. The Atlantic Monthly, Volume 11, No. 65, March, 1863 When the earth is nearest the sun she is in her perihelion; and in her aphelion at the farthest point. From the Earth to the Moon; and, Round the Moon It is a constant quantity, and only unequally distributed on the earth's surface, being neither increased nor diminished, as our winters occur in aphelion or perihelion. Life: Its True Genesis From the point of view of the importance of finding out the divergence of a cometary orbit from a parabola, its period, and its aphelion distance, this increase of range attains the very highest value. History of Astronomy Hence each planet is nearer to the sun at one part of its orbit than another; that point is called the perihelion, and the farthest point aphelion. Recreations in Astronomy With Directions for Practical Experiments and Telescopic Work It may, perhaps, be far advanced in its aphelion.—But when to return? Selections from the Speeches and Writings of Edmund Burke Still," he adds, "during extreme excentricity the sun would make great efforts to compensate in perihelion for the chill of a long winter in aphelion in one hemisphere, and a cool summer in the other. More Letters of Charles Darwin — Volume 2 The northern Ice-monarch has resumed absolute sway, and our aphelion distance from the sun has increased some tens millions of miles. Life: Its True Genesis The real diameter of the same comet's nebulosity is observed to contract rapidly as it approaches the sun, and dilate with equal rapidity in its departure towards its aphelion. The Works of Edgar Allan Poe — Volume 1 But the eye of science sees it as having passed its aphelion beyond the orbit of Neptune in 1873, and is already hastening back to the warmth and light of the sun. Recreations in Astronomy With Directions for Practical Experiments and Telescopic Work The motion of Newton's comet at aphelion may be equally slight. The Education of Henry Adams You think, then," said Servadac, with a smile, "you have determined the perihelion of our orbit; but how about the aphelion? Off on a Comet! a Journey through Planetary Space Without noticing the interruption, Servadac continued his own remarks, "The comet then, I see, is to reach its aphelion on the 15th of January, exactly a twelvemonth after passing its perihelion." Off on a Comet! a Journey through Planetary Space This would leave 81,000,000 leagues more to be traversed before reaching the aphelion of the 15th of January, after which it would begin once more to approach the sun. Off on a Comet! a Journey through Planetary Space |
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