adjective
COLLOCATIONS FROM OTHER ENTRIES
a lunar eclipse ( also an eclipse of the Moon ) (= one in which the Moon is hidden behind the Sun )
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If it's cloudy, it may not be possible to see the lunar eclipse.
lunar month
the lunar/solar cycle (= relating to the moon or the sun )
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the 28-day lunar cycle
COLLOCATIONS FROM CORPUS
■ NOUN
base
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As noted earlier, oxygen can in principle be recycled efficiently within a lunar base .
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Like a new lunar base , a baby must first master at least the arts of breathing and eating.
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The high-temperature electrolysis scheme that we explored in connection with a lunar base can separate carbon dioxide into oxygen and carbon monoxide.
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An oversimplified but instructive point can be made by considering the fate of carbohydrates transported to the lunar base from Earth.
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For these reasons, many engineers and mission planners have favored the use of nuclear power for the lunar base .
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This would substantially defray the cost of operating a lunar base .
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If ice is available at the site of the lunar base , then the situation is dramatically different.
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In other respects, the lunar poles are not an attractive site for the lunar base .
crater
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All of the various topographic features observed in lunar craters indicates their impact origin.
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Long before spacecraft missions first explored the Moon, speculation on the origin of the lunar craters abounded.
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They differ from corresponding lunar craters by having no central peaks and by having rather smooth rims.
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I would recommend them only for the casual observer who wants little apart from views of lunar craters .
eclipse
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It shows the moon's state every day of the year, as well as solar and lunar eclipses .
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Sept. 26: Second lunar eclipse .
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However, the recent lunar eclipse and Mercury in retrograde motion signify the financial position is much too uncertain.
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Solar and lunar eclipses , however, occurred far too rarely to provide any meaningful aid to navigation.
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You can also plot comets and minor planets as well as predict solar and lunar eclipses .
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It is a clear day, which should be ideal for watching the lunar eclipse that is expected tonight.
landscape
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But the pictures sent by Mariner 4 showed a starkly lunar landscape .
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Where once this corner of the island was swaddled in green, a lunar landscape now stands.
material
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The Earth then captures lunar material .
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There has been no mention of any way to profit from the use of lunar material .
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Various rocks show evidence that the lunar material has been melted, squirted out from volcanoes, and crushed by meteorite impacts.
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They therefore are also very efficient at releasing all the trapped solar-wind gases in the lunar material .
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Alternatively, arrays of solar cells may be made on the Moon out of lunar materials and only the power exported.
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This is almost certainly the first practical use of lunar materials to be attempted.
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Failing that, export of lunar materials will not make economic sense.
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The largest portion of our present knowledge comes from the study of returned lunar materials in laboratories on Earth.
module
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Grumman had installed them on the lunar module assuming that the astronauts would wish to use them.
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The Alvin is the lunar module of deep-sea exploration.
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About three days later the command, service and lunar module combination arrived at the Moon.
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Apollo 8 was scheduled to be the first Earth-orbital test of the lunar module .
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It was always thought that the lunar module would essentially be a skin wrapped round the tanks and equipment needed.
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The same problem arose later when the crew had transferred over to the lunar module .
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Unfortunately the filters used in the command module were the wrong shape to fit into the lunar module.
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Apollo 10 took a lunar module along as well and flew it to within nine miles of the surface.
month
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By the time you are thirty, an entire lunar month later.
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The days passed quickly toward the end of the eighth lunar month .
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The nineteen-year cycle depends on the discovery that nineteen solar years are very nearly equal to 235 lunar months .
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More probably it was to do with each member representing one of the lunar months of the year.
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They found that 309 lunar months were almost equal to twenty-five civil years.
regolith
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The lunar regolith is found covering the whole of the Moon's surface, aside from steep crater and valley walls.
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Another uses hydrofluoric acid to release oxygen from unprocessed lunar regolith .
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Agglutinates greatly complicate the business of extracting useful materials from mature lunar regolith .
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This is a feat of mythic proportions, comparable to extracting gold from sea water-or helium-3 from the lunar regolith .
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Kulcinski argues that the solar wind has implanted great quantities of hydrogen and helium into the lunar regolith .
rock
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Hardly any lunar rocks are younger than three billion years.
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In general, lunar rocks differ from terrestrial rocks in that the Moon contains much lower concentrations of easily vaporized elements.
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Schemes for extracting oxygen from lunar rocks usually feature melting or chemically destroying the principal minerals in the rocks and regolith.
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None the less, it is good to keep in mind that very few geochemists expect water to be found in lunar rocks .
surface
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Astronauts discovered that finding their way about on the lunar surface was often harder then they expected.
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The most obvious source of the necessary electrical energy would be solar panels set out on the lunar surface .
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Despite being obviously different in weight they struck the lunar surface together.
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Such a transportation system will exert a constant demand for fuel both at the space station and on the lunar surface .
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Standing in bright sunlight on the lunar surface would be extremely hot.
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Sufficiently large impacts can hurl crater ejecta to any point on the lunar surface .
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In only one case was a sample obtained from a large lump of rock, these being scarce on the lunar surface .
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Unfortunately, water remains unknown in materials returned from the lunar surface .
EXAMPLES FROM OTHER ENTRIES
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the lunar landscape
EXAMPLES FROM CORPUS
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About three days later the command, service and lunar module combination arrived at the Moon.
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An oversimplified but instructive point can be made by considering the fate of carbohydrates transported to the lunar base from Earth.
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Figure 6.3 is about the best that can be done with the lunar data at present.
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His longtime sailboat, named Apogee in honor of his lunar Apollo flight, is for sale.
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In order to separate a lunar effect the team looked at the lunar day, the position of the Moon.
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The answer is C acceleration. as far away as and four times the lunar mass.
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The prospect of servicing and repairing such equipment under lunar conditions is simply frightening.