rille

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rille

(rĭl): see moonmoon,
natural satellite of a planet (see satellite, natural) or dwarf planet, in particular, the single natural satellite of the earth. The Earth-Moon System

The moon is the earth's nearest neighbor in space.
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rille

(ril) (rima) Either of two distinct types of elongated lunar depression (see table). Sinuous rilles are confined to the maria, where they follow local contours, are frequently discontinuous (or consist of rows of coalescing craters), and have V-shaped cross sections. They sometimes originate in volcanic caldera and are assumed to be channels, or collapsed tubes, carved out by molten basaltic lavas. Examples exist of sinuous rilles inside sinuous rilles but tributary systems are not observed.

Faulted linear, arcuate, and forked rilles have flat floors and do not recognize highland-mare boundaries. This second type of rille is frequently associated with impact basins and craters, where they may be concentric. See also crater chain; fault; wrinkle ridges.

Collins Dictionary of Astronomy © Market House Books Ltd, 2006

rille

[ril]
(astronomy)
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
The Chappaz team delicately tweaked GRAIL's data to find indications of 11 lunar tubes--some extending beyond sinuous rilles, some between skylights, and some with no surface expression at all.
Nevertheless, it appears that hot lava ponds up to [?]5 km in diameter could have formed around basaltic vents on the Moon if the eruption rates were high enough--as high as those postulated to explain the long lava flows and sinuous rilles. The motion of the lava in such ponds would have been thoroughly turbulent, thus encouraging thermal erosion of the base of the pond, and this presumably explains why the circular to oval depressions seen surrounding the sources of many sinuous rilles have just these sizes.
Except for Mare Humorum's concentric rilles, obvious fractures on the lunar surface tend to be quite rare.
Perhaps that is precisely what the unfailing rooflessness of the lunar rilles is evidence that the Moon was once much closer to the Earth?
Schroter investigated rilles, mare ridges, and the lunar limb, and he measured elevations of mountains and craters.
Suivez le chemin qu'on indique, et surtout respectez les prejuges des meres de familes, c'est encore le meilleur garant de la vertu des rilles!" Otherwise, "c'est la mise a pied ...
Labels mark locations discussed in the text: A, Aristarchus region; DV, Doppelmayer-Vitello region; A 75 and A17, landing sites of Apollo 15 and 17, respectively; and SG, rilles near Sulpicius Gallus crater.
(5,6) Some of these domes are exceptionally large, and most of them are associated with faults or linear rilles of presumably tensional origin.
One of Hammergren's favorite features on the moon are lunar rilles, channels on the moon carved out long ago by flowing lava.
This suffering, that of the victims of the conquest and that of the author, can, however, be mitigated through the "autobiography in the plural," the scriptural equivalent of these feminine gatherings in the course of which "the time-honoured phraseology discharges the burden of rancour and rilles that rasp the throat.