| 单词 | cometary |
| 例句 | There would be few recognizable pieces of the comet left—perhaps only a smattering of small grains from the non-icy parts of the cometary nucleus. Cosmos 1980-01-01T00:00:00Z Surrounding our Sun is a spherical swarm of giant snowballs composed of ice and rock and organic molecules: the cometary nuclei. Cosmos 1980-01-01T00:00:00Z There the Sun heats it, the ice is vaporized, and a lovely cometary tail develops. Cosmos 1980-01-01T00:00:00Z But occasionally a passing star makes a gravitational flurry and commotion in the cometary cloud, and a group of comets finds itself in highly elliptical orbits, plunging toward the Sun. Cosmos 1980-01-01T00:00:00Z Newton seems to have believed that the Earth’s oceans are of cometary origin, and that life is possible only because cometary matter falls upon our planet. Cosmos 1980-01-01T00:00:00Z As late as 1988 more than half of all American paleontologists contacted in a survey continued to believe that the extinction of the dinosaurs was in no way related to an asteroid or cometary impact. A Short History of Nearly Everything 2003-05-06T00:00:00Z Striking the Earth’s atmosphere, a modest cometary fragment would produce a great radiant fireball and a mighty blast wave, which would burn trees, level forests and be heard around the world. Cosmos 1980-01-01T00:00:00Z Kepler described comets as darting through space “as the fishes in the sea,” but being dissipated by sunlight, as the cometary tail always points away from the sun. Cosmos 1980-01-01T00:00:00Z The cometary impact and fireball would simulate all effects of a one- megaton nuclear burst, including the mushroom cloud, with two exceptions: there would be no gamma radiation or radioactive fallout. Cosmos 1980-01-01T00:00:00Z The debris spreads to fill the full cometary orbit. Cosmos 1980-01-01T00:00:00Z Could a rare but natural event, the impact of a sizable cometary fragment, trigger a nuclear war? Cosmos 1980-01-01T00:00:00Z An impact of a small cometary fragment with the Earth, as at Tunguska, should occur about once every thousand years. Cosmos 1980-01-01T00:00:00Z For example: Margaret Landis, 30, is an astrophysicist who collects texts related to the cometary discoveries of Maria Mitchell, the first female astronomer in the United States. Meet the New Old Book Collectors 2022-05-07T04:00:00Z The formation of a supercontinent is not a fast and furious horror show like a cometary impact or, say, humanity’s rapid-fire gaming of the climate and annihilation of natural habitats. Will the Next Supercontinent Really Drive Mammals to Extinction? 2023-10-17T04:00:00Z The outburst may result from a rare case of icy volcanism on a comet—uncorked by solar heating of volatile gases trapped under cometary crusts. ‘Millennium Falcon’ Comet Sprouts Icy Wings as It Loops around the Sun 2023-07-26T04:00:00Z Meanwhile, there were no observed signs of cometary activity — such as a cometary tail, or gas emission absorption lines — which is why the possibility of it being a comet was initially ruled out by some. A new paper says 'Oumuamua was a comet, not an alien spacecraft. Not everyone agrees 2023-03-26T04:00:00Z “The authors of the new paper claim that it was a water ice comet even though we did not see the cometary tail,” Dr. Loeb said in an email. Oumuamua Was a Comet After All, a Study Suggests 2023-03-22T04:00:00Z Those long-period comets compose the Oort cloud, or a band of cometary debris on the fringes of the solar system. How to see green comet passing Earth for first time in 50,000 years 2023-01-21T05:00:00Z It could have been born of ice vaporization, making the object cometary. The Mysterious Comets That Hide in the Asteroid Belt 2022-11-18T05:00:00Z Most cometary fireballs are fragile; they fragment and burn up high in Earth’s atmosphere. Fireball from Solar System’s edge isn’t what astronomers expected 2022-10-05T04:00:00Z In the same paper, Loeb theorized the acceleration could have been a result of cometary outgassing, but said it was unlikely because there was no evidence for a cometary tail around it. A new paper says 'Oumuamua was a comet, not an alien spacecraft. Not everyone agrees 2023-03-26T04:00:00Z But scientists do not see much evidence for cometary impacts in the inner solar system. The Milky Way’s Spiral Arms May Have Carved Earth’s Continents 2022-09-30T04:00:00Z Therefore, icy, cometary material could be the most important constituent of the solar system after the Sun itself. Astronomy 2016-10-13T00:00:00Z The subsequent "cometary shrapnel" may have then caused the extinction-level event that led to the most recent major extinction event. The most massive comet ever discovered yields clues as to how the solar system evolved 2022-04-13T04:00:00Z "In the present day, the bodies don't display any signs of cometary activity," said Nicholas Moskovitz of Lowell Observatory. Astronomers discover a pair of young "twin" asteroids, barely older than the United States 2022-02-08T05:00:00Z But what about the lack of evidence of a cometary tail? A new paper says 'Oumuamua was a comet, not an alien spacecraft. Not everyone agrees 2023-03-26T04:00:00Z This will allow researchers to probe the regions of the solar system where cometary activity begins. Astronomers Thrill at Giant Comet Flying into Our Solar System 2021-06-30T04:00:00Z If, as some astronomers suspect, there are 10 times this many cometary objects in the solar system, how does the total mass of cometary matter compare with the mass of Jupiter? Astronomy 2016-10-13T00:00:00Z “The dust from comets is fluffier than from asteroids,” Rojas says, adding that the cometary material also tends to be richer in organic matter, which is typical of Jupiter family comets. Antarctic Study Shows How Much Space Dust Hits Earth Every Year 2021-04-29T04:00:00Z This led him to study cometary impact rates on those systems, which led to him creating numerical simulations to calculate long-period comets in our own solar system. Why some scientists think a comet, not an asteroid, caused the dinosaurs to go extinct 2021-02-17T05:00:00Z With only a small sliver of moon to compete, the relatively dark skies will help sky-watchers enjoy these flashes of cometary debris. 10 spectacular stargazing events to watch in 2021 2020-12-29T05:00:00Z Instead, `Oumuamua showed no carbon-based molecules along its trail, nor jitter or change in its spin period—as expected from cometary jets. Let's Search for Alien Probes, Not Just Alien Signals 2020-12-22T05:00:00Z It is likely, however, that some small amount of cometary material will remain in orbit, much like our Kuiper belt, a flattened disk of comets outside the orbit of Neptune. Astronomy 2016-10-13T00:00:00Z Researchers hope to pinpoint the color of NEOWISE’s cometary dust and analyze how the colors change as the comet continues to fly away from the sun and the inner solar system. Hubble Captures Close-Up of Comet NEOWISE 2020-08-26T04:00:00Z Even now, photons are traversing the Oort Cloud of icy cometary debris at the outer reaches of our Solar System. Missing Memories of the Universe 2020-05-29T04:00:00Z "The data collection may be over, but the analysis and the results will continue for years yet, adding to the rich legacy of cometary knowledge provided by Rosetta." Comet chameleon? Here’s why this nearby comet keeps changing colors 2020-02-06T05:00:00Z These cometary measurements are one of many Spitzer results that established important connections between the properties of the Solar System and those of exoplanetary systems—which themselves have also been extensively studied by Spitzer. Why the Spitzer Space Telescope Matters 2020-01-06T05:00:00Z After a few million years of violent impacts, most of the debris was swept up or ejected, leaving only the asteroids and cometary remnants surviving to the present. Astronomy 2016-10-13T00:00:00Z “For their part, scientists view the many layers of polar ice as a record of past cometary and asteroidal impacts, shedding light on the long history of the Earth-moon system,” Rummel says. Science and Sustainability May Clash on the Moon 2019-07-10T04:00:00Z Most cometary bodies studied to date have D/H ratios 2 to 3 times higher than in terrestrial water, suggesting that at most 10% of Earth's water was delivered by comets. Planet Plates, Metal Moon and Comet Cocktails 2019-06-15T04:00:00Z “It’s fantastic that they’ve got another D/H ratio,” says cometary scientist Karen Meech, of the University of Hawaii’s Institute for Astronomy. Hyperactive Comets Hint at Origins of Earth's Oceans 2019-05-09T04:00:00Z Welsh and Montgomery plan to continue observing Eta Corvi to provide further confirmation of the tantalizing cometary signal. Comet-Blasted Star May Be a Rerun of the Solar System's Birth 2019-02-04T05:00:00Z “The most likely situation is that the impactor was a fragment of a comet,” he says, noting that the bulk of the debris in our space neighborhood is broken-off cometary chunks. In a First, Earthlings Spot a Meteor Strike the Eclipse-Darkened Moon 2019-01-24T05:00:00Z A total lunar eclipse is always something to marvel at, but one being gate-crashed by a hypersonic cometary shard is something else entirely. During the Lunar Eclipse, Something Slammed Into the Moon 2019-01-23T05:00:00Z Moreover, if it was cometary activity, then we would expect the spin period of this object to change, and we don’t see that. Have Aliens Found Us? A Harvard Astronomer on the Mysterious Interstellar Object ‘Oumuamua 2019-01-16T05:00:00Z But as telescopes around the world turned their attention to 'Oumuamua, it became clear the visitor showed no signs of cometary activity. Interstellar Mystery Object Now Thought to Be a Comet 2018-06-27T04:00:00Z He added: "It's entirely consistent with cometary bodies we've studied - with the Rosetta probe, for example - in our own Solar System." Interstellar object may hold 'alien' water 2017-12-18T05:00:00Z They detect no signs of cometary activity, which suggests that the object would be classified as an asteroid. Planetary science: Reckless orbiting in the Solar System : Nature : Nature Research 2017-03-28T04:00:00Z The ability to observe a cometary body changing over time, and from such close quarters, is likely to mean “a true revolution” in cometary science, says Geraint Jones, a planetary scientist at University College London. Mission accomplished: Rosetta crashes into comet 2016-09-29T04:00:00Z But Rosetta will be doing science until her last moments: On Sept. 30, the robot will descend to a mysterious cometary region known as Ma’at. Rosetta orbiter will soon crash into its comet and die 2016-09-12T04:00:00Z Mark your calendars and stock up on tissues: On Sept. 30, the European Space Agency's Rosetta orbiter will crash into a cometary cemetery. The Rosetta orbiter’s days are officially numbered 2016-06-30T04:00:00Z "The synergy of the data sets and their utility in identifying, harvesting, and analyzing high-value cometary samples is the big payoff," Prof Ebel said. Comet Wild 2 dust 'ballistics' probed in 3D - BBC News 2016-01-10T05:00:00Z He is also resuming work on the European Space Agency cometary mission Rosetta, on which he has an ultraviolet spectrometer instrument, and on plans to fly research payloads on suborbital spacecraft. 365 days: Nature’s 10 2015-12-16T05:00:00Z This object is thought to be at most 30 miles across - akin to a cometary nucleus on steroids - and barely 1% the size of Pluto. A New Billion Mile Journey for New Horizons 2015-08-31T04:00:00Z Current theoretical models of the cometary debris field indicate that the Perseids will peak between 9:30 p.m. See Shooting Stars Galore as Meteor Shower Peaks 2015-08-11T04:00:00Z One of the declared goals of the Rosetta mission when it was approved in 1993 was to determine the composition of volatile compounds in the cometary nucleus. Life's Building-Block Chemicals Found on Comet by Lander 2015-07-31T04:00:00Z A first list of molecules identified on the cometary nucleus by COSAC, authored by Meierhenrich and colleagues, will be published at the end of July in the journal Science. No alien life on Philae comet 2015-07-06T04:00:00Z The first suggests that when 67P was closest to the sun, 6.5 years ago, cometary activity pushed the icy chunks into shadowed regions and protected them from the sun. Signs of Water Ice Detected on Comet Surface 2015-07-03T04:00:00Z This builds on previous missions, like NASA’s Stardust mission that collected and returned cometary and cosmic dust in aerogel. Making Space for Everyone: A Q&A with BoldlyGo's Jon Morse 2015-06-18T04:00:00Z “The power from the solar arrays is not sufficient, on its own, to drill and analyse cometary samples, for example.” Controllers wait on Philae link - BBC News 2015-06-17T04:00:00Z Their results, published in the journal Nature Geoscience, support the idea that Mercury was "painted black" by cometary dust over billions of years. Mercury 'painted black' by passing comets 2015-03-30T04:00:00Z After that, we’d spend up to a year making our way past the Oort Cloud cometary reservoir that marks the limit of our Sun’s gravitational sway. Week in Geek: Light speed edition 2015-02-08T05:00:00Z That’s the crux of this new paper which, among other things, posits that these passing stars cause a significant number of the Oort Cloud’s kilometer-sized cometary bodies to be injected into Earth-crossing orbits. Outer Solar System Likely To Collide With Orange Dwarf Star 2014-12-29T05:00:00Z It captured a few snapshots of its cometary visitor, much as an Earth-bound human might, staring in wonder at the night sky. Mars and comets: a brief summary of this week's sweetest space news 2014-12-17T05:00:00Z “The study of these cometary particles will help shed more light on the material that served for planetary formation,” she says. Comet dust found in Antarctica 2014-12-05T05:00:00Z Ensuring the probe landed on the relatively smooth area of the cometary surface chosen by ESA’s scientists was tricky. Touchdown! 2014-11-12T05:00:00Z Mercury may simply get impacted with more cometary material than the moon, says Lawrence. NASA's MESSENGER Spacecraft Headed For Mercury Impact 2014-09-22T04:00:00Z But what this new cometary influx will actually mean for life here in the inner solar system is still up for grabs. Outer Solar System Likely To Collide With Orange Dwarf Star 2014-12-29T05:00:00Z “It’s a truly exciting time for cometary science, 28 years on from our encounter with comet Halley by Giotto.” Rosetta Starts Search For The Origin Of Life 2014-08-06T04:00:00Z “This is going to be a giant leap forwards in terms of cometary science. We’ll see how the comet works, how it interacts with the Sun, the processes that are ongoing,” he said. Rosetta Probe To Contact The 'Rubber Duck' Comet 2014-08-05T04:00:00Z The fact that all the events are consistent with an azimuthally homogeneous ring system makes other interpretations, such as an ensemble of cometary jets, very unlikely. A ring system detected around the Centaur (10199) Chariklo 2014-04-04T18:25:37.267Z Why would Mercury be more prone to attract cometary impactors than the Moon? NASA's MESSENGER Spacecraft Headed For Mercury Impact 2014-09-22T04:00:00Z There’s also a vast assortment of far smaller bodies, from asteroids to cometary nuclei, all swirling around the Sun in a variety of orbits. Your Friendly Neighborhood Asteroid Swarm 2014-02-24T14:05:11Z The current data seem to suggest that this boil-off, like that of a cometary nucleus, is the more likely culprit for Ceres’s watery outbursts – coinciding with its closest approaches to the Sun. Water Erupts Across the Solar System 2014-01-27T14:14:17Z And every year, Earth passes through cometary dandruff. Not Just Pretty, Perseid Meteors Hold Key to Clear View of the Heavens 2013-08-10T11:15:05.773Z For decades astronomers and paleontologists have debated whether our sun has a stellar mass M-dwarf companion dubbed “Nemesis” that could have caused a 26 million-year periodicity in earth’s asteroidal and cometary impact record. Sun May Still Have Low-Mass Solar Companion, Say Astrophysicists Searching NASA WISE Mission Data 2013-03-31T04:28:18Z It all comes in every size imaginable, from microscopic grains to great big asteroids and cometary nuclei that may be miles across. Meteor fireballs across central Russia 2013-02-15T15:45:02.593Z In other words, dynamical pulling and shoving with its sister suns resulted in the acquisition of a vast number of alien cometary bodies. Will This Be The Comet Of The Century? 2013-02-06T17:15:00.737Z It also permeates the ancient material of our solar system that we see preserved in carbonaceous chondrite meteorites and cometary contents. Should We Expect Other Earth-like Planets At All? 2012-12-26T20:15:00.430Z Methane could be a sign of bacterial life, although trace amounts might also be produced by cometary impacts or geological reaction. Seven days: 2–8 November 2012 2012-11-07T18:20:36.423Z Comet Hopper - This would study cometary evolution by landing on a comet multiple times and observing its changes as it interacted with the Sun. Nasa selects another Mars mission 2012-08-20T20:39:33Z I saw no more of him for a year or two, during which period he had been wandering in the Hartz Forest, in Germany; and his return was cometary, meteorous, unlike his setting out. Winterslow Essays and Characters Written There 2012-03-27T02:00:25.647Z The problem is that the precise composition and physical structure of any cometary chunk is hard to predict, as is its reaction to increasing temperatures. Will This Be The Comet Of The Century? 2013-02-06T17:15:00.737Z Cyanogen is, of course, a poisonous gas, but cometary matter is so rarefied that injurious effects on the earth need not be feared. Astronomical Curiosities Facts and Fallacies 2012-03-27T02:00:18Z That all meteors were originally parts of cometary masses is however a theory that may be accepted without much hesitation. Astronomy: The Science of the Heavenly Bodies 2012-03-17T02:01:02.630Z A research into the mutual perturbations of Jupiter and Saturn secured for him the prize of the Berlin Academy in 1830, and a memoir on cometary disturbances was crowned by the Paris Academy in 1850. Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 8 "Haller, Albrecht" to "Harmonium" 2012-01-02T03:00:22.443Z It was the dust and fragments of the lost comet of Biela, which, after being split in two in 1852, had evidently continued the process of disintegration until its cometary character was completely lost. Astronomy with an Opera-glass A Popular Introduction to the Study of the Starry Heavens with the Simplest of Optical Instruments 2011-07-17T02:00:30.177Z Luminous cometary matter, then, is very light, that is, has very little weight or inertia. The Plurality of Worlds 2011-06-01T02:00:23.787Z On Earth, cometary impacts early in the planet’s history could have provided this raw material, and the Sun and atmospheric pressure would have done the rest. Fountains of Optimism for Life Way Out There 2011-05-09T22:13:41Z Many features of this theory of cometary tails are borne out by examination of their light with the spectroscope, although the investigation is as yet fragmentary. Astronomy: The Science of the Heavenly Bodies 2012-03-17T02:01:02.630Z The culprit in both cases appears to be cometary debris strikes that tilted the rings, a tilt that over the years became twisted up into a spiral pattern of ripples within the rings. A New Wrinkle: Comet Strikes in the 1980s and 1990s Left Ripples in Jupiter's and Saturn's Rings 2011-03-31T21:45:04.647Z Finally, there was the question of cometary randomness. NASA's Stardust Spacecraft Reaches Comet Tempel-1 2011-02-16T08:20:00Z The most remarkable event, however, in the recent history of cometary astronomy was its Meteors. assimilation to that of meteors, which took unquestionable cosmical rank as a consequence of the Leonid tempest of November 1833. Encyclopaedia Britannica, 11th Edition, Volume 2, Slice 7 "Arundel, Thomas" to "Athens" Another and yet more remarkable observation is on record which goes far to prove not only the tenuity, but the transparency of a cometary nucleus. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 7 "Columbus" to "Condottiere" The practical identity of several such meteor streams and cometary orbits has already been established, and there is every reason for assigning a similar origin to all meteoric bodies. Astronomy: The Science of the Heavenly Bodies 2012-03-17T02:01:02.630Z I saw no more of him for a year or two, during which period he had been wandering in the Hartz Forest in Germany; and his return was cometary, meteorous, unlike his setting out. English Critical Essays Nineteenth Century Each of his periods, begin where it may, accomplishes a cometary sweep ere it closes. Harper's New Monthly Magazine, Volume 1, No. 2, July, 1850. With no pilot, the ship would go into a cometary orbit around the sun. Last Resort A curious circumstance, which may be explained by a duplex character of the matter forming a cometary tail, is the great difference between the visual and photographic aspect of these bodies. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 7 "Columbus" to "Condottiere" Meteors, then, were originally parts of comets, which have trailed themselves out to such extent that particles of the primal masses are liable to be picked up anywhere along the original cometary paths. Astronomy: The Science of the Heavenly Bodies 2012-03-17T02:01:02.630Z The great majority of cometary orbits are classed as parabolic; and it is ordinarily inferred that they are visitors from remote space, and will never return. Essays: Scientific, Political, & Speculative, Vol. I But the cometary orbit is a much later addition, and no attempt is made to show the relative distances of the planets. Pioneers of Science The swarms travel along paths that resemble cometary orbits; they are very elongated ellipses, inclined at all angles to the plane of the ecliptic. The Astronomy of the Bible An Elementary Commentary on the Astronomical References of Holy Scripture The resemblance of the cometary spectrum to the spectrum of hydrocarbons in the Geissler tube lends great plausibility to this view. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 7 "Columbus" to "Condottiere" Both eccentricity and inclination of orbit at times suggest a possible relation to cometary orbits, but nothing has ever been definitely made out connecting asteroids and comets in a related origin. Astronomy: The Science of the Heavenly Bodies 2012-03-17T02:01:02.630Z The small eccentricities of the orbits of the planets and satellites, as contrasted with the great eccentricities of the cometary orbits. Essays: Scientific, Political, & Speculative, Vol. I He also directed his attention to the study of cometary bodies, and arrived at certain conclusions with regard to the nature of their movements. The Astronomy of Milton's 'Paradise Lost' The name of Olbers has already been brought prominently before our readers in connection with asteroidal discoveries; these, however, were but chance excursions from the path of cometary research which he steadily pursued through life. A Popular History of Astronomy During the Nineteenth Century Fourth Edition If we call Δe the amount by which the eccentricity of a cometary orbit is less than unity, Δe will be an extremely minute fraction in the case of the original orbits. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 7 "Columbus" to "Condottiere" The second type tails are somewhat curved, or plume-like, and they form the most common type of cometary tail. Astronomy: The Science of the Heavenly Bodies 2012-03-17T02:01:02.630Z Indeed, in certain cases, jets of cometary material are actually projected towards the sun. The Story of the Heavens There is something delightfully cometary about the affection of the buttercup. Stray Studies from England and Italy Yet the depth of cometary matter through which such faint stellar rays penetrated undimmed, was, near the central parts of the globe, not less than 50,000 miles. A Popular History of Astronomy During the Nineteenth Century Fourth Edition The transformation of motion into heat, and the combination of the cometary gases with the oxygen of our atmosphere might produce a conflagration, or a general poisoning of the atmosphere. Astronomy for Amateurs Doubtless this great comet is a member of what is known as a cometary group, which consists of comets having the same orbit and traveling tandem round the sun. Astronomy: The Science of the Heavenly Bodies 2012-03-17T02:01:02.630Z The hydrocarbon bands are, however, not always the only features visible in cometary spectra. The Story of the Heavens This conception of the origin and development of a comet will also account, and that on a logical and philosophical basis, for another fact which is associated with cometary phenomena. Aether and Gravitation They still remain unexplained; but it can scarcely be doubted that they are due to the action of the same energetic internal forces which reveal themselves in so many splendid and surprising cometary phenomena. A Popular History of Astronomy During the Nineteenth Century Fourth Edition They come to us from a vast distance, from millions on millions of miles, and circle in swarms around the Sun, following a very elongated ellipse which closely resembles that of the cometary orbit. Astronomy for Amateurs To Newton it appeared probable that cometary voyagers through space might have orbits of their own; and he proved that the comet of 1680 never swerved from such a path. Astronomy: The Science of the Heavenly Bodies 2012-03-17T02:01:02.630Z But the case is very different when we deal with the actual cometary orbits. The Story of the Heavens In fact, I do not know that he would require more than a small fraction of a horse-power to remove the cometary dust. Fragments of science, V. 1-2 The return of Halley's comet in 1835 was looked forward to as an opportunity for testing the truth of floating cometary theories, and did not altogether disappoint expectation. A Popular History of Astronomy During the Nineteenth Century Fourth Edition And it was thus, under the name of cometary orb, that the seventh child of the Sun was announced. Astronomy for Amateurs The immediate job was the completion of a map of the meteor swarms following cometary orbits about this sun. The Aliens We must recollect that the veil drawn between the cluster and the telescope was not a thin curtain; it was a volume of cometary substance many thousands of miles in thickness. The Story of the Heavens Let us fill a hollow sphere of this diameter with cometary matter, and make it our unit of measure. Fragments of science, V. 1-2 The rapidity of cometary disintegration is thus curiously illustrated. A Popular History of Astronomy During the Nineteenth Century Fourth Edition Uranus and Neptune have no cometary character whatever, their orbits are less eccentric than others and do not intersect, nor approach within millions of miles of Saturn's orbit. Fables of Infidelity and Facts of Faith Being an Examination of the Evidences of Infidelity Hence the necessity of changing the “Constant of Resistance” after perihelion, and this will generally be found necessary in all cometary orbits, if this theory be true. Outlines of a Mechanical Theory of Storms Containing the True Law of Lunar Influence The planets might experience considerable derangements from cometary attraction, and yet in the lapse of time those disturbances would neutralise each other, and the permanence of the system would be unaffected. The Story of the Heavens In some cases it has been suspected that a part at least of the cometary mass was solid. Outlines of the Earth's History A Popular Study in Physiography Their illumination by disruptive electric discharges was, however, a condition sine quâ non for the exhibition of the cometary type of spectrum. A Popular History of Astronomy During the Nineteenth Century Fourth Edition Yes, religion; the world will be a blackened cinder or cometary gas before the love of God is stamped from its heart. Visionaries In cometary astronomy we shall find much to substantiate these views. Outlines of a Mechanical Theory of Storms Containing the True Law of Lunar Influence We have, indeed, on more than one occasion, actually witnessed the violent disturbance of a cometary orbit. The Story of the Heavens My power extends so far as to afford you a glimpse of the nature of a cometary world.” Consolations in Travel or, the Last Days of a Philosopher Electricity alone seems competent to produce the varieties of cometary emanation they were designed to account for. A Popular History of Astronomy During the Nineteenth Century Fourth Edition Between the brilliant circular semi-ring and the head, the cometary substance seemed dark, very rare, and very diaphanous. Biographies of Distinguished Scientific Men The great and strange variety of cometary aspects is described with exactitude by Father Souciet in his Latin poem on comets. Young Folks' Library, Volume XI (of 20) Wonders of Earth, Sea and Sky Their eccentric and irregular paths may undergo the most enormous derangements; indeed, the history of astronomy contains many instances of the vicissitudes to which a cometary career is exposed. The Story of the Heavens Genius has placed the more exalted spiritual natures in cometary worlds, and this last fiery revolution may be produced by the appulse of a comet. Consolations in Travel or, the Last Days of a Philosopher Primitive incandescence, attendant, in his fantastic view, on planetary origin by cometary impacts with the sun, combined, he concluded, with vast bulk to bring about this result. A Popular History of Astronomy During the Nineteenth Century Fourth Edition Its practical value was illustrated by the brilliant researches of Halley on cometary orbits. Biographies of Distinguished Scientific Men Meteoric and cometary matter lying Page 132 there, in a spherical shell about the solar system, balanced between the attraction of different suns, finally feels the power that determines its destiny toward our sun. Recreations in Astronomy With Directions for Practical Experiments and Telescopic Work The lightest haze that ever floated in a summer sky would do more to screen the stars from our view than would one hundred thousand miles of such cometary material as was here interposed. The Story of the Heavens They are well-intentioned and free and happy, and never think of envy as they query these cometary strangers. A Midsummer Drive Through the Pyrenees 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 The question at issue was nothing less than the creation of a new era in cometary astronomy, or the casting of a reproach upon science, the consequences of which it would long continue to feel. Biographies of Distinguished Scientific Men So far, it has been unable to discover with any approach to certainty the physical constitution of either sun, stars, or even cometary matter. Five Years of Theosophy The impact from the first arrivals of the cometary body upon the outer envelopes of the Martian atmosphere had begun. The Certainty of a Future Life in Mars Between the brilliant circular semi-ring and the head, the cometary substance appeared to be dark, of great rarity, and very diaphanous. The Story of the Herschels We can scarcely doubt that the fate has overtaken them which Newton assigned as the end of all cometary existence. A Popular History of Astronomy During the Nineteenth Century Fourth Edition The Astronomical portion, by Mr. Barker, is unusually copious, and the cometary plates are well executed. The Mirror of Literature, Amusement, and Instruction Volume 19, No. 532, February 4, 1832 Some physicists have attributed the continuance of solar heat to the contraction of the solar mass, and others to the impact of cometary matter. Heroes of the Telegraph It lies in the path, certainly defined and determined by observers, of a small cometary mass, which will plunge upon it a rain of rock and iron. The Certainty of a Future Life in Mars It shook the very foundation of cometary superstition. History of the Warfare of Science with Theology in Christendom Cometary photography came to its earliest fruition with it; and cometary spectroscopy made a notable advance by means of it. A Popular History of Astronomy During the Nineteenth Century Fourth Edition The public temper will soon get to a cometary heat, now the question of Reform has set in. Middlemarch No such cometary monster had ever before been seen. The Second Deluge Man's course is like that of an arrow; for the portion of the great cometary ellipse which he occupies is no more than a needle's length to a mile. Specimens of the Table Talk of Samuel Taylor Coleridge In this, as in various other sermons, he supports the theological cometary theory fully. History of the Warfare of Science with Theology in Christendom Yet these felicities of explanation must not make us forget that the chemical composition attributed to the first type of cometary trains has, so far, received no countenance from the spectroscope. A Popular History of Astronomy During the Nineteenth Century Fourth Edition 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 Our latest study points to the conclusion that they are of cometary origin, and, as comets have been known to divide, some scientists believe the meteorites are fragments of exploded comets. Daybreak; a Romance of an Old World Meantime, the ordinary affairs of men were discarded, and all interest absorbed in a growing discussion instituted by the philosophic in respect to the cometary nature. Edgar Allan Poe's Complete Poetical Works As early as the first half of the sixteenth century we hear Julius Caesar Scaliger protesting against the cometary superstition as "ridiculous folly." History of the Warfare of Science with Theology in Christendom The chemical intensity of cometary light is, to begin with, extraordinarily small. A Popular History of Astronomy During the Nineteenth Century Fourth Edition Finally, that indefatigable worker on meteors, A. S. Herschel, added to the number, and in 1878 gave a list of seventy-six coincidences between cometary and meteoric orbits. History of Astronomy We have given up a chaos-philosophy—the haphazard continuity of events—a cometary orbit, for the world. The Warriors Pogson searched in the place indicated and saw a cometary mass retreating into the southern heavens, where it was soon swallowed from sight! Curiosities of the Sky Catholic France spurned him, and Jurieu, the great Reformed divine, called his cometary views "atheism," and tried hard to have Protestant Holland condemn him. History of the Warfare of Science with Theology in Christendom This was at first so vividly continuous, that the characteristic cometary bands could scarcely be detached from their bright background. A Popular History of Astronomy During the Nineteenth Century Fourth Edition Unhindered by air to impede its progress the sky-car had been hurtling through space at cometary speed. The Lord of Death and the Queen of Life The cometary discoveries of these men afford an excellent illustration of how much can be done with the smallest means when one sets to work in the right spirit. Side-Lights on Astronomy and Kindred Fields of Popular Science Subsequently sodium and iron lines were found in cometary spectra. Curiosities of the Sky Kepler's main reasoning as to the existence of a law for cometary movement was right; but his secondary reasoning, that comets move nearly in straight lines, was wrong. History of the Warfare of Science with Theology in Christendom The typical cometary orbit, apart from disturbance, is parabolic—that is to say, it is indistinguishable from an enormously long ellipse. A Popular History of Astronomy During the Nineteenth Century Fourth Edition Meantime, the ordinary affairs of men were discarded and all interests absorbed in a growing discussion, instituted by the philosophic, in respect to the cometary nature. The Works of Edgar Allan Poe — Volume 4 Here, accordingly, till well on in September, Daun sat immovable; not even hitching now,—only shooting out Detachments, planetary, cometary, at a great rate, chiefly on his various Russian errands. History of Friedrich II of Prussia — Volume 19 What a story it tells of the myriads of cometary victims that have fallen prey to the sun since first he stretched his planetary net across the heavens! A History of Science — Volume 3 When beyond the limits of the atmosphere they applied the full current, and were soon once more cleaving the ether at cometary speed, their motion towards the sun being aided by that great body itself. A journey in other worlds A romance of the future The triple tail seemed a visible solar analysis of cometary matter. A Popular History of Astronomy During the Nineteenth Century Fourth Edition 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. Off on a Comet! a Journey through Planetary Space The photographic feebleness of cometary rays was not the only obstacle in the way of success. A Popular History of Astronomy During the Nineteenth Century Fourth Edition After such fiascos the cometary train could never again pose as a world-destroyer. A History of Science — Volume 3 The importance of the feat consisted in its throwing open to investigation a part of the spectrum invisible to the eye, and so affording an additional test of cometary constitution. A Popular History of Astronomy During the Nineteenth Century Fourth Edition Yet this stately apparition marked no turning-point in the history of cometary science. A Popular History of Astronomy During the Nineteenth Century Fourth Edition Nebulae are vast cometary clouds, with particles more or less widely separated, giving off gases through meteoric collisions, internal or external, and perhaps glowing also with electrical or phosphorescent light. A History of Science — Volume 3 Discarding the crude notions of cometary impact and volcanic eruption, Laplace filled up the gaps in the hypothesis with the aid of well-known laws of gravitation and motion. A History of Science — Volume 3 So thickly is the space we traverse strewn with this cometary dust that the earth sweeps up, according to Professor Newcomb's estimate, a million tons of it each day. A History of Science — Volume 3 Then it was elaborated by Zollner, and particularly by Bredichin, of the Moscow observatory, into what has since been regarded as the most plausible of cometary theories. A History of Science — Volume 3 Presumably, all five would show universally in cometary spectra, were the dispersed rays strong enough to enable them to be seen. A Popular History of Astronomy During the Nineteenth Century Fourth Edition So widely are the individual particles separated that the cometary body as a whole has been estimated to be thousands of times less dense than the earth's atmosphere at sea-level. A History of Science — Volume 3 |
| 随便看 |
英语例句辞典收录了117811条英语例句在线翻译词条，基本涵盖了全部常用单词及词组的例句翻译及用法，是英语学习的有利工具。