| 单词 | lunar crater |
| 例句 | Most curious is his view of the origin of the lunar craters, which make the Moon, he says, “not dissimilar to the face of a boy disfigured with smallpox.” Cosmos 1980-01-01T00:00:00Z But the fact that only a few of the lunar craters have extensive ray systems also reminds us that, even on the Moon, some erosion occurs.' Cosmos 1980-01-01T00:00:00Z Now you can make your own 3D model of a lunar crater. Making the Moon 2019-06-17T04:00:00Z Much of what we know about this shadowed material came from a 2009 mission to intentionally crash part of a rocket into the lunar crater Cabeus and measure the debris from the impact. The moon’s south pole is a mystery. This image offers a stunning new glimpse 2023-09-19T04:00:00Z Provided clear skies, binoculars or backyard telescopes can enhance the experience, Espenak said, revealing such features as lunar maria — the dark plains formed by ancient volcanic lava flows — and rays emanating from lunar craters. Two supermoons in August mean double the stargazing fun 2023-07-29T04:00:00Z Tycho, about 82 kilometers in diameter, is one of the youngest of the very large lunar craters. Astronomy 2016-10-13T00:00:00Z A couple of years ago, NASA’s Stratospheric Observatory for Infrared Astronomy detected water molecules in the Clavius Crater, one of the largest lunar craters visible from Earth. Moon may hold massive water from ancient volcanoes — a potential source for astronauts, study finds 2022-05-23T04:00:00Z There is no monolith, no secret base on the rim of a lunar crater. Moon Cube Mystery: Chinese Rover Finds It’s Just a Rock 2022-01-07T05:00:00Z Because lunar craters are not typically named for living people, “there’s definitely a historical lag,” Dr. Singer said. How Many Moon Craters Are Named for Women? Fewer Than You’d Guess. 2021-04-27T04:00:00Z To celebrate the Lunar anniversary, he’s created some special works of lunar craters, which he’s 3D printed and painted. All of the Apollo anniversary swag you can buy from dumb to fun 2019-07-19T04:00:00Z One consequence may have been scattering of asteroids into the inner solar system, causing the period of “heavy bombardment” recorded in the oldest lunar craters. Astronomy 2016-10-13T00:00:00Z Other scientists are skeptical, because the research draws its conclusions from only a small number of terrestrial and lunar craters. What Happened to Earth’s Ancient Craters? Scientists Seek Clues on the Moon’s Pocked Surface 2019-01-17T05:00:00Z And that’s much harder on the moon than on Earth, since geologists can’t currently sample lunar craters directly. Lunar Craters Show Spike in Earth-Pummeling Space Rocks 2019-01-19T05:00:00Z In total, they looked at 111 lunar craters with a diameter of more than 6.2 miles that are less than a billion years old to get an idea. Asteroids have been crushing Earth for nearly 300 million years and no one knows why 2019-01-18T05:00:00Z At that moment, there on the edge of a lunar crater, alone and enveloped in profound silence, he becomes iconic. ‘First Man’: Ryan Gosling is stellar as astronaut Neil Armstrong 2018-10-08T04:00:00Z One of the first geologists to propose that lunar craters were the result of impacts was Grove K. Gilbert, a scientist with the US Geological Survey in the 1890s. Astronomy 2016-10-13T00:00:00Z A fresh lunar crater tends to be surrounded by large boulders that were excavated by the meteor impact. What Happened to Earth’s Ancient Craters? Scientists Seek Clues on the Moon’s Pocked Surface 2019-01-17T05:00:00Z MIP actually may have observed water on its way to concentrate on lunar “cold traps” — frigid, permanently shadowed lunar craters, he added. Scientists Spot Water-Rich Rocks on Moon 2017-07-24T04:00:00Z He and his colleagues studied the peak ring inside the lunar crater Schrödinger to predict what sorts of rock might exist in the Chicxulub core4. Geologists to drill into heart of dinosaur-killing impact 2016-03-30T04:00:00Z This was further than the typical extent for continuous ejecta deposits from a lunar crater. 'Shrapnel' risk to Moon missions 2014-03-19T23:53:10Z Gilbert concluded that the lunar craters were produced by impacts, but he didn’t understand why all of them were circular and not oval. Astronomy 2016-10-13T00:00:00Z Yet the continuing record of large lunar craters being created after the 3.8-billion-year cut-off, and hints of ancient impacts on Earth, suggested that the story was incomplete. Ancient asteroids kept on coming 2012-04-25T17:20:28.573Z Many of the lunar craters are without doubt volcanic in origin, others seem to be ruins of molten lakes. Astronomy: The Science of the Heavenly Bodies 2012-03-17T02:01:02.630Z "There's nothing like this in any lunar craters." Hot, Odd and Curious: NASA Orbiter Reveals Mercury to Be Surprisingly Complex 2011-10-03T21:45:05.207Z Plan of the Peak of Teneriffe, showing how it resembles a lunar crater. Through Magic Glasses and Other Lectures A Sequel to The Fairyland of Science 2011-10-03T02:00:33.003Z The brightest lunar crater rays are associated with large young craters such as Kepler and Tycho. Astronomy 2016-10-13T00:00:00Z In this respect they resemble Aristarchus and other lunar craters that are remarkable for their brilliancy under a high illumination. 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 A rock might roll down the wall of a lunar crater, but there would be no noise; though we should know what had happened by the tremor produced. Astronomy: The Science of the Heavenly Bodies 2012-03-17T02:01:02.630Z I have already, I may remark, considered the evidence respecting this new lunar crater which some suppose to have been formed during the last two years. The Library Magazine of Select Foreign Literature All volumes 2011-03-02T03:00:25.433Z It furnishes, too, some indication of how numerous are the lunar craters, and how in crowded regions they overlap one another. A Text-Book of Astronomy 2011-01-05T03:00:57.347Z A century ago, Grove Gilbert suggested that the lunar craters were caused by impacts, but the cratering process was not well understood until more recently. Astronomy 2016-10-13T00:00:00Z You tried to drill a hole in a wall and it ended up looking like a lunar crater. Small Talk: Kevin Davies 2010-12-24T09:31:29Z In the lunar crater, which lies in perpetual darkness, the water is in the form of almost pure ice grains mixed in with the rest of the soil, and is easy to extract. NASA Reports a Moon Oasis, Just Wetter Than the Sahara 2010-10-21T18:05:00Z We may dismiss, in the first place, without any hesitation, the assertion that regular changes take place in the floor of the great lunar crater Plato. The Library Magazine of Select Foreign Literature All volumes 2011-03-02T03:00:25.433Z Craters.—Fig. 63 shows a typical lunar crater, and conveys a good idea of the ruggedness of the lunar landscape. A Text-Book of Astronomy 2011-01-05T03:00:57.347Z He pointed out that the large lunar craters—mountain- rimmed, circular features with floors generally below the level of the surrounding plains—are larger and have different shapes from known volcanic craters on Earth. Astronomy 2016-10-13T00:00:00Z New Mall Observatory See lunar craters, solar spots and other sky delights from the newest star on the Mall: a public observatory, adjacent to the National Air and Space Museum. 3-Planet Monte, Meteors and the Mall 2009-10-04T04:00:00Z Both SPA and Apollo are estimated to be among the oldest lunar craters, based on the large number of smaller craters superimposed on top of them. Biggest, Deepest Crater Exposes Hidden, Ancient Moon 2010-03-08T17:06:00Z The case of the lunar crater Linné, which somewhere about November 1865 attracted the attention of astronomers, belongs to a very different category. The Library Magazine of Select Foreign Literature All volumes 2011-03-02T03:00:25.433Z From his apartment, the topography resembled that of a lunar crater. Tangle Hold What differences did Grove K. Gilbert note between volcanic craters on Earth and lunar craters? Astronomy 2016-10-13T00:00:00Z So that, allowing for differences in magnitude, it would seem that there is no essential distinction between lunar craters and terrestrial craters of the type of Mauna Loa. Volcanoes: Past and Present With regard to the origin of the lunar craters there has been much discussion. Astronomy of To-day A Popular Introduction in Non-Technical Language We see in it various ranges of lunar mountains, while the central object in the picture is one of those remarkable lunar craters which we meet with so frequently in every lunar landscape. The Story of the Heavens It was he who discovered in November 1866 that a lunar crater had disappeared, an announcement quite in accordance with the facts of the case. Myths and Marvels of Astronomy It is, however, impossible to deny the evidence which the lunar craters afford as to the past existence of volcanic activity on our satellite. Time and Tide A Romance of the Moon It is a perfect type of the lunar crater. All Around the Moon A typical lunar crater may be described as a circular wall, enclosing a central plain, or "floor," which is often much depressed below the level of the surface outside. Astronomy of To-day A Popular Introduction in Non-Technical Language We are thus led to refer the origin of the lunar craters to some ancient epoch in the moon's history. The Story of the Heavens Take the lunar crater called ``Tycho'', which is a typical example of its kind. Curiosities of the Sky Copernicus.—Of all the lunar craters this is one of the grandest and best known. The Story of the Heavens Tycho belongs to the system of lunar craters that is called radiating, like Aristarchus or Copernicus, which had been already seen and highly admired by our travellers at their first approach to the Moon. All Around the Moon Many of the lunar craters encroach upon one another; in fact there is not really room for them all upon the visible hemisphere of the moon. Astronomy of To-day A Popular Introduction in Non-Technical Language According to his theory we can explain how the rampart around the lunar crater has been formed, and how the great mountain arose which so often adorns the centre of the plain. The Story of the Heavens Instead of being cavities in the summits of mountains, the lunar craters are rather gigantic sink-holes whose bottoms in many cases lie two or three miles below the general surface of the lunar world. Curiosities of the Sky Aristarchus is the most brilliant of the lunar craters, being specially vivid with a low power in a large telescope. The Story of the Heavens We shall now attempt to account for the formation of the lunar craters. The Story of the Heavens The lunar craters differ from those of the earth more fundamentally than in the matter of mere size; they are not situated on the tops of mountains. Curiosities of the Sky |
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