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.
..... Click the link for more information. .

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)

rill

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References in periodicals archive ?

While observing the seven-day-old Moon recently, I found it especially difficult to detect the K-shaped pattern of rilles east of Triesnecker Crater.

Observing history: challenge yourself to see as well as the best 19th-century lunar cartographers

In fact, the vents of most sinuous rilles are depressions, as if the eruption caused the roof to collapse as the source magma chamber was emptied to form the rilles.

Hints of vents: track down the volcanic sources of the lunar maria

Wood's question about what size scope can show the Triesnecker rilles is answered in Wilkins and Moore's 1955 classic The Moon, where they state that the main members appear in a good 3-inch refractor.

Observing the moon's rilles

On another outing they drove to the 1.5-km-wide, relatively steep-sided Hadley Rille. The rille was formed by rapidly moving lava flows that built up levees along its 80-km length.

Footprints on the moon: use your telescope to explore the apollo landing sites

Boel Morck and Rille Pullerits contributed equally to this work.

Infliximab dose reduction sustains the clinical treatment effect in active HLAB27 positive ankylosing spondylitis: a two-year pilot study

The lawsuit was originally filed in the Eastern District of Arkansas by Norman Rille and Neal Roberts under whistleblower provisions of the federal False Claims Act.

Accenture settles false claims suit for $64 million

As a title in the Archaelogy Series from Hadley Rille Books, Mayflies was created to be an "archaeologically-accurate novel ...

Shauna Roberts. Like Mayflies in a Stream

In 2007, IBM and PricewaterhouseCoopers agreed to pay a total of $5.2 million to settle allegations around the same case, which was originally filed by whistleblowers Norman Rille and Neal Roberts.

HP agrees to settle government kickback probe

IT company HP (NYSE: HPQ) today announced that it has reached a settlement with the US Department of Justice which will resolve and investigation into HP's GSA Multiple Award Schedule contract as well as separate allegations associated with the Rille complaint files in the US District Court in the Eastern District of Arkansas in 2007.

HP settles with US Dept. of Justice

They collected 169 lbs (76.8kg) of moon rock from 12 different sites including Hadley Rille, an ancient channel believed to have been carved by torrents of flowing lava.

Spycatcher book row made author millionaire

And Apollo 15 landed near a vast chasm in the lunar surface, Hadley Rille.

1969 A SPACE ODYSSEY; Reaching for the stars 40 years after man first walked on the moon

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