| 单词 | spherule |
| 例句 | We recovered the materials from that meteor in the form of spherules — molten droplets from the surface of the object. Astrophysicist Avi Loeb discusses UFOs, alien life and his controversial interstellar research 2023-09-06T04:00:00Z During and after his Galileo Mission, in which he used a deep-sea, magnetic rake to scoop up these mysterious spherules, he wrote more than 40 publicly available blog entries about his findings. Harvard professor Avi Loeb says he found interstellar objects in the deep sea. Others are skeptical 2023-09-01T04:00:00Z On the ship and back at Harvard, the team picked over the debris with tweezers and found, amid volcanic ash, nearly 700 “spherules,” tiny metallic pellets 1 millimeter or less across. Did interstellar debris fall to the sea floor? Claim meets sea of doubt 2023-08-30T04:00:00Z At the expedition’s conclusion, our final count was a whopping 50 spherules, ranging in size at 100–700 microns, with the plurality coming from the search strip I calculated. Have We Found Fragments of a Meteor from Another Star? 2023-07-05T04:00:00Z The x-rays revealed tiny, crystalized bits of glass called spherules—remnants of the shower of molten rock that would have been thrown from the impact site and rained down around the world. Paleontologist accused of faking data in dino-killing asteroid paper 2022-12-06T05:00:00Z We found that the spherules along the meteor path have an unusual composition that suggests that they came from outside the solar system. Astrophysicist Avi Loeb discusses UFOs, alien life and his controversial interstellar research 2023-09-06T04:00:00Z Loeb says additional evidence comes from the trajectory of IM1 as it passed through the atmosphere and broke apart before entering the ocean as spherules. Harvard professor Avi Loeb says he found interstellar objects in the deep sea. Others are skeptical 2023-09-01T04:00:00Z Droplets of once-molten material, spherules routinely form in explosions of ordinary meteors, and also in volcanic eruptions. Did interstellar debris fall to the sea floor? Claim meets sea of doubt 2023-08-30T04:00:00Z These spherules are tantalizing, especially given that many of them show compositional anomalies relative to typical ones. Have We Found Fragments of a Meteor from Another Star? 2023-07-05T04:00:00Z The fact that spherules were found in the fishes’ gills suggested the animals died in the minutes to hours after the impact. Paleontologist accused of faking data in dino-killing asteroid paper 2022-12-06T05:00:00Z Evidence for the theory can be found not just within the crystals but also in areas called spherule beds. The Milky Way’s Spiral Arms May Have Carved Earth’s Continents 2022-09-30T04:00:00Z But Desch says the speed at which an interstellar meteorite of this composition entered the atmosphere would burn everything up and there wouldn't be any spherules like these left. Harvard professor Avi Loeb says he found interstellar objects in the deep sea. Others are skeptical 2023-09-01T04:00:00Z Jacobsen found that the ratios of iron isotopes in the spherules largely matched those of the Sun—a mark against an interstellar origin. Did interstellar debris fall to the sea floor? Claim meets sea of doubt 2023-08-30T04:00:00Z Or do they belong to the background population of spherules from “local” solar system meteors, which have accumulated on the seafloor over geological time? Have We Found Fragments of a Meteor from Another Star? 2023-07-05T04:00:00Z According to the New York Times, the fragments within two of the spherules were "wildly different," DePalma said. "Beyond our wildest dreams": Scientists find fossil from dinosaur that died the day the asteroid hit 2022-04-11T04:00:00Z He worries that only two spherule beds match the crystal data, and one of those beds is not located within Australia—meaning that the timing might not match after all. The Milky Way’s Spiral Arms May Have Carved Earth’s Continents 2022-09-30T04:00:00Z On the other hand, if it came from within our solar system, it could have gone slow enough to break apart and fall into the ocean, scattering spherules like these. Harvard professor Avi Loeb says he found interstellar objects in the deep sea. Others are skeptical 2023-09-01T04:00:00Z However, five of the spherules were unusually enriched in beryllium and lanthanum, and, to a lesser degree, uranium. Did interstellar debris fall to the sea floor? Claim meets sea of doubt 2023-08-30T04:00:00Z A definitive answer will emerge from studying the isotopic signatures embedded within the spherules. Have We Found Fragments of a Meteor from Another Star? 2023-07-05T04:00:00Z But the composition of fragments within two of the spherules were “wildly different,” Mr. DePalma said. Shards of Asteroid That Killed the Dinosaurs May Have Been Found in Fossil Site 2022-04-07T04:00:00Z She points out that glass spherules tied to the PETM, presumably forged and thrown up in an impact, have been found off the coast of New Jersey. Controversial impact crater under Greenland’s ice is surprisingly ancient 2022-03-08T05:00:00Z During the expedition, Loeb was followed by a film crew interested in making a documentary about the retrieval of the spherules. Harvard professor Avi Loeb says he found interstellar objects in the deep sea. Others are skeptical 2023-09-01T04:00:00Z This “BeLaU” fingerprint hasn’t been seen in records of known meteoritic spherules, Jacobsen says, although it does resemble some lunar samples. Did interstellar debris fall to the sea floor? Claim meets sea of doubt 2023-08-30T04:00:00Z They found tiny glass balls called spherules embedded in the fishes' gills; these small spheres fused from ultrahot sediments when the asteroid struck and ejected towering plumes of dirt from the impact crater. “Frozen in Place” Fossils Reveal Dinosaur-Killing Asteroid Struck in Spring 2022-02-23T05:00:00Z Mr. DePalma said there also appears to be some bubbles within some of the spherules. Shards of Asteroid That Killed the Dinosaurs May Have Been Found in Fossil Site 2022-04-07T04:00:00Z Kennett says the team will continue to advance its case with evidence from more than 40 sites worldwide that contain glassy spherules or platinum-rich sediments, which the group believes are indicative of an impact. Controversial impact crater under Greenland’s ice is surprisingly ancient 2022-03-08T05:00:00Z These spherules formed from rocks that were flung into the air by the impact, crystallized, and rained down 15 to 30 minutes after the asteroid hit. Springtime was the season the dinosaurs died, ancient fish fossils suggest 2022-02-23T05:00:00Z Jacobsen himself acknowledges the pattern does not on its own indicate that the spherules came from outside the Solar System. Did interstellar debris fall to the sea floor? Claim meets sea of doubt 2023-08-30T04:00:00Z Other researchers who studied Tanis' Cretaceous death pit calculated that impact spherules would have fallen between 15 and 30 minutes after the asteroid crashed into Earth. “Frozen in Place” Fossils Reveal Dinosaur-Killing Asteroid Struck in Spring 2022-02-23T05:00:00Z Because the spherules do not look to be cracked, it’s possible that they could hold bits of air from 66 million years ago. Shards of Asteroid That Killed the Dinosaurs May Have Been Found in Fossil Site 2022-04-07T04:00:00Z The mud and sand are dotted with glassy spherules—many caught in the gills of the fish—isotopically dated to 65.8 million years ago. Astonishment, skepticism greet fossils claimed to record dinosaur-killing asteroid impact 2019-04-01T04:00:00Z Its cameras spied small spherules that were quickly dubbed "Blueberries" because of their shape and small size. Nasa calls time on Opportunity Mars rover 2019-02-13T05:00:00Z Indeed, the team needs to do more to prove the spherules came from space and are not volcanic, Nittler says. Did interstellar debris fall to the sea floor? Claim meets sea of doubt 2023-08-30T04:00:00Z They fired lasers at the glassy spherules to release argon for dating, but the samples were too contaminated. Massive crater under Greenland’s ice points to climate-altering impact in the time of humans 2018-11-14T05:00:00Z He saw one of the paddlefish fossils with spherules in its gills and is convinced that the site does indeed capture the day of the cataclysm and its immediate aftermath. Shards of Asteroid That Killed the Dinosaurs May Have Been Found in Fossil Site 2022-04-07T04:00:00Z But some portion of it would have condensed into small spherules in the sky to then rain back down on the bowl. Team hunts tracer of 'dinosaur killer' asteroid - BBC News 2016-12-13T05:00:00Z Furthermore, a statement about the spherules' chemistry has been clarified to show that they are different from microtektites from other impacts. Comet may have struck Earth just 10 million years after dinosaur extinction 2016-10-13T04:00:00Z So far, only one of the anomalous spherules has the isotopic pattern in its iron expected if it was heated by a fiery passage through the atmosphere. Did interstellar debris fall to the sea floor? Claim meets sea of doubt 2023-08-30T04:00:00Z But the authors of the Science study identified an interesting mineral within the glassy spherules known as microtektites. Comet impact 'linked' to rise of mammals - BBC News 2016-10-13T04:00:00Z In the 2019 paper, Mr. DePalma and his colleagues described how spherules raining down from the sky clogged the gills of paddlefish and sturgeon, suffocating them. Shards of Asteroid That Killed the Dinosaurs May Have Been Found in Fossil Site 2022-04-07T04:00:00Z It was evocative of the lunar breccias Agee recalled from the Apollo days—except that Black Beauty’s spherules were much more diverse. Feature: A castaway from ancient Mars 2014-11-25T05:00:00Z "We quickly found evidence that these were impact spherules," Huber said. Earth's Oldest and Biggest Crater Yields New Secrets 2014-04-29T22:00:00Z He also says the link between the spherules and the 2014 fireball is tenuous. Did interstellar debris fall to the sea floor? Claim meets sea of doubt 2023-08-30T04:00:00Z The discovery of the glassy spherules, reported in Science, provides additional evidence favouring the comet theory, according to Prof Kent. Comet impact 'linked' to rise of mammals - BBC News 2016-10-13T04:00:00Z Usually the outsides of impact spherules have been mineralogically transformed by millions of years of chemical reactions with water. Shards of Asteroid That Killed the Dinosaurs May Have Been Found in Fossil Site 2022-04-07T04:00:00Z CT scans have also revealed smaller iron-rich spherules resembling “blueberries,” the iron-oxide concretions discovered on Mars a decade ago by the Opportunity rover and thought to have precipitated out of water. Feature: A castaway from ancient Mars 2014-11-25T05:00:00Z The signatures are associated with fine-grained, layered rocks containing spherules of diagenetic or impact origin. [Research Article] Ancient Aqueous Environments at Endeavour Crater, Mars 2014-01-23T19:25:06.090Z Even if the spherules hit the ocean where Loeb says, they would have likely drifted by tens of kilometers in ocean currents before settling on the seabed, Desch argues. Did interstellar debris fall to the sea floor? Claim meets sea of doubt 2023-08-30T04:00:00Z Apparent, also, are lots of small spherules, or concretions, which again are strongly indicative of mineral precipitation in water. Mars rover eyes rock drill site 2013-01-15T20:25:01Z Finding amber-encased spherules, he said, was the equivalent of sending someone back in time to the day of the impact, “collecting a sample, bottling it up and preserving it for scientists right now.” Shards of Asteroid That Killed the Dinosaurs May Have Been Found in Fossil Site 2022-04-07T04:00:00Z Newberries: The individual spherules pictured here are about 3mm in diamter At the moment, it is not clear whether the two outcrops relate to a period from before or after the creation of Endeavour. Rover could be on Martian clays 2012-12-07T22:16:28Z When an impact splashes molten rock debris into the atmosphere, tiny droplets solidify to form distinctive ‘impact spherules’. Ancient asteroids kept on coming 2012-04-25T17:20:28.573Z But given the spherules’ small size—one weighed only 27 micrograms—teasing out that signal could be a challenge. Did interstellar debris fall to the sea floor? Claim meets sea of doubt 2023-08-30T04:00:00Z Another effect which he states reduces the usual maximum signaling distance is the presence of material particles held in suspension by the water spherules in moist atmosphere. Hertzian Wave Wireless Telegraphy 2012-01-09T03:00:20.570Z The separate spherules now begin to lose their smooth outline, to throw out processes, and to show amœboid movements like those of the creatures just described. On the Origin and Metamorphoses of Insects 2011-12-05T03:00:46.667Z Among animals, the color of the eyes and hairy covering, the form and height of the animal, its generic characteristics, and its individual characters—all are contained within this minute spherule. Psychotherapy 2011-06-19T02:00:20.053Z Impacts as large as the one that may have caused the extinction of the dinosaurs 65 million years ago can scatter spherules around the globe. Ancient asteroids kept on coming 2012-04-25T17:20:28.573Z There was the crossbedding, the salt minerals that seemed to precipitate from an evaporating lake, and the famed “blueberries” — accretionary spherules formed by the movement of water through local rock. Scientist at Work: The Mars Connection 2011-04-01T19:41:49Z As I am informed that Captain Strype, editor of the "Foxden Regulator," has a large interest in the sale of these alterative spherules, you will necessarily encounter the hostility of our county journal. The Atlantic Monthly, Volume 11, No. 68, June, 1863 2011-02-11T03:00:30.570Z The debris from the mountains includes micrometeorites and tiny particles called spherules. Clues to Antarctica space blast 2010-03-03T16:55:00Z All these splendid phenomena are, I believe, produced by diffraction, the vesicles or spherules of water in the case of the cloud acting the part of the sporules in the case of the lycopodium. The Glaciers of the Alps Being a narrative of excursions and ascents, etc. They were also able to relate the thickness of each layer and the size of the spherules to the diameter and incoming velocity of the impactor that produced them. Ancient asteroids kept on coming 2012-04-25T17:20:28.573Z While the blueberry concretions on Mars are distributed throughout the rock, here the spherules occur only in certain layers, reflecting the periodic, discrete nature of the volcanic hailstorms. Scientist at Work: The Mars Connection 2011-04-01T19:41:49Z Just so, the energy required to put the moisture spherule into a state of strain is latent until some power releases it, when it reappears as active energy of some form. Nature's Miracles, Volume 1 Familiar Talks on Science—World-Building and Life. Earth, Air and Water. Under ordinary circumstances the spherule rebounds, and may be thus reflected backwards and forwards several times between the adjacent masses. Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 3 "Capefigue" to "Carneades" They are due to the interposition of small spherules of water, which act the part of diffracting obstacles. Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 4 "Diameter" to "Dinarchus" Small rounded spherules of iron, believed by some to be meteoric dust, have also been obtained in some numbers. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 4 "Cincinnatus" to "Cleruchy" Every thread of the web was strung with minute spherules of moisture, and they displayed all the tints of the rainbow. Under the Maples These little balloons, so to speak, are called spherules. Nature's Miracles, Volume 1 Familiar Talks on Science—World-Building and Life. Earth, Air and Water. Magnus showed that the stream of spherules may be diverted into another path by the attraction of a powerfully electrified rod, held a little below the place of resolution. Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 3 "Capefigue" to "Carneades" But when as much moisture is added as can be perfectly dissolved, the air becomes transparent; and opake again, when a part of this moisture collects into small spherules previous to its precipitation. Zoonomia, Vol. II Or, the Laws of Organic Life Vast pyramidal heaps leap incessantly from the river, some of them with such energy as to jerk their summits into the air, where they hang momentarily suspended in crowds of liquid spherules. Fragments of science, V. 1-2 The spherule of force which is the primitive basis of a cell spends itself in the discharge of its work. The Destiny of the Soul A Critical History of the Doctrine of a Future Life Let us follow this vapor spherule as it floats into the upper regions of the atmosphere. Nature's Miracles, Volume 1 Familiar Talks on Science—World-Building and Life. Earth, Air and Water. The gradually increasing amplitude of the disturbance, the formation of the elongated ligament, and the subsequent transformation of the ligament into a spherule, could be examined with ease. Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 3 "Capefigue" to "Carneades" It is supposed to be of chemical origin, each spherule being an aggregation of particles round a central nucleus. Vestiges of the Natural History of Creation Closed spherules lined by a single layer of cells enclosing a gelatinous material known as colloid, which stains deeply with acid dyes, comprise the units of its architecture. The Glands Regulating Personality Conversation with him reduced the world from a sphere to a spherule. The Life of Sir Richard Burton In these rocks the nucleus of every minute spherule is seen, under the microscope, to consist of a small rhizopod or foraminifer. The Student's Elements of Geology |
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