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Optical maturity maps of rays, derived from Clementine multispectral data and calibrated with lunar sample analyses, provide a new way to define the two youngest time stratigraphic units on the Moon: Planetary Science Research Discoveries (PSRD) educational on-line space science magazine. ... Investigating Lunar Crater Rays...
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www.psrd.hawaii.edu/Sept04/LunarRays.html
www.psrd.hawaii.edu/Sept04/LunarRays.html
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Lunar Crater Rays Point to a New; Lunar Time Scale; --- Optical maturity maps of rays, derived from Clementine multispectral data and calibrated with lunar sample analyses, provide a new way to define the two youngest time stratigraphic units on the Moon.
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www.psrd.hawaii.edu/Sept04/PSRD-LunarRays.pdf
www.psrd.hawaii.edu/Sept04/PSRD-LunarRays.pdf
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Lunar Sunrise/Sunset Rays ... The first thing that comes to mind when someone says "lunar rays", are the beautiful ray systems that are best seen during full moon. ... So far, the list of observed lunar light rays has been growing. The very first in the database was in the crater Hesiodus. This particular light ray event...
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www.lunar-occultations.com/rlo/rays/robinsonarticle.htm
www.lunar-occultations.com/rlo/rays/robinsonarticle.htm
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LUNAR SUNRISE/SUNSET CRATER RAYS; Background Information, Predictions Through 2016 and Observation Reports ... Astronomical League "REFLECTOR MAGAZINE" Article on Lunar Sunrise/Sunset Rays by Rob Robinson ... Article on Lunar Sunrise/Sunset Rays by Jeff Medkeff (external link)
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www.lunar-occultations.com/rlo/rays/rays.htm
www.lunar-occultations.com/rlo/rays/rays.htm
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Lunar Ray Project ... Example ray systems include Copernicus, Tycho, and Messier A & B. A map of the rays can be produced from these images. School Instruction: for teachers, this project offers students an excellent opportunity to participate in a scientific project.
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www.amlunsoc.org/lunar_rays.htm
www.amlunsoc.org/lunar_rays.htm
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Although they are some of the most extensive features on the Moon, bright lunar rays are still among the most understudied. Therefore, the above mentioned organizations and dedicated independent observers have embarked upon a study of these beautiful and intriguing splash patterns.
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www.zone-vx.com/rays.htm
www.zone-vx.com/rays.htm
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Lunar sunrise and sunset rays are shafts of light which shine through gaps or notches in crater walls and mountains to illuminate the lunar surface. They occur only at very low angles of light - during lunar sunrise or sunset.
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www.otastro.org/2007-10-hesiodus/
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In general, ray craters are relatively young as their rays overlay the lunar terrain. In fact, at 85 kilometers wide, Tycho, with its far reaching rays, is the youngest large crater on the nearside. Crater Copernicus, surrounded by dark mare which contrast nicely with its bright rays, is 93 kilometers in diameter.
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antwrp.gsfc.nasa.gov/apod/ap010809.html
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SAO/NASA ADS Astronomy Abstract Service ... More Article Retrieval Options ... HELP for Article Retrieval...
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adsabs.harvard.edu/abs/1957ApJ...126..466O
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