by neufer » Sat Jan 09, 2021 10:51 pm
https://en.wikipedia.org/wiki/Shangdu#Samuel_Purchas_(1625) wrote:
<<In 1614, the English clergyman Samuel Purchas published Purchas his Pilgrimes – or Relations of the world and the Religions observed in all ages and places discovered, from the Creation unto this Present. This book contained a brief description of Shangdu, based on the early description of Marco Polo:
- "In Xandu did Cublai Can build a stately Pallace, encompassing sixteen miles of plaine ground with a wall, wherein are fertile Meddowes, pleasant Springs, delightfull streames, and all sorts of beasts of chase and game, and in the middest thereof a sumpuous house of pleasure, which may be moved from place to place."
>>
https://en.wikipedia.org/wiki/Xanadu_(Titan) wrote:
<<A mosaic of nine processed images acquired during Cassini's first very close flyby of Saturn's moon Titan on Oct. 26, 2004, constitutes the most detailed full-disc view of the mysterious moon. The view is centered on 15 degrees South latitude, and 156 degrees West longitude. Brightness variations across the surface and bright clouds near the south pole are easily seen. The images that comprise the mosaic have been processed to reduce the effects of the atmosphere and to sharpen surface features. The mosaic has been trimmed to show only the illuminated surface and not the atmosphere above the edge of the moon. The Sun was behind Cassini so nearly the full disc is illuminated. Pixels scales of the composite images vary from 2 to 4 kilometers per pixel. Surface features are best seen near the center of the disc, where the spacecraft is looking directly downwards; the contrast becomes progressively lower and surface features become fuzzier towards the outside, where the spacecraft is peering through haze, a circumstance that washes out surface features. The brighter region on the right side and equatorial region is named Xanadu Regio. Scientists are actively debating what processes may have created the bizarre surface brightness patterns seen here. The images hint at a young surface with no obvious craters. However, the exact nature of that activity, whether tectonic, wind-blown, fluvial, marine, or volcanic is still to be determined. The images comprising this mosaic were acquired from distances ranging from 650,000 kilometers to 300,000 kilometers.>>
[quote=https://en.wikipedia.org/wiki/Shangdu#Samuel_Purchas_(1625)]
<<In 1614, the English clergyman Samuel Purchas published Purchas his Pilgrimes – or Relations of the world and the Religions observed in all ages and places discovered, from the Creation unto this Present. This book contained a brief description of Shangdu, based on the early description of Marco Polo:
[list][b][i][color=#0000FF] "In Xandu did Cublai Can build a stately Pallace, encompassing sixteen miles of plaine ground with a wall, wherein are fertile Meddowes, pleasant Springs, delightfull streames, and all sorts of beasts of chase and game, and in the middest thereof a sumpuous house of pleasure, which may be moved from place to place."[/color][/i][/b][/list]>>[/quote][quote=https://en.wikipedia.org/wiki/Xanadu_(Titan)]
[float=left][img3=""]https://upload.wikimedia.org/wikipedia/commons/thumb/2/25/Titan_globe.jpg/800px-Titan_globe.jpg[/img3][img3=""]https://upload.wikimedia.org/wikipedia/commons/thumb/7/7b/PIA20713-Titan-SaturnMoon-LabeledFeaturesIAU-June2015.jpg/1280px-PIA20713-Titan-SaturnMoon-LabeledFeaturesIAU-June2015.jpg[/img3][/float]
:arrow: <<A mosaic of nine processed images acquired during Cassini's first very close flyby of Saturn's moon Titan on Oct. 26, 2004, constitutes the most detailed full-disc view of the mysterious moon. The view is centered on 15 degrees South latitude, and 156 degrees West longitude. Brightness variations across the surface and bright clouds near the south pole are easily seen. The images that comprise the mosaic have been processed to reduce the effects of the atmosphere and to sharpen surface features. The mosaic has been trimmed to show only the illuminated surface and not the atmosphere above the edge of the moon. The Sun was behind Cassini so nearly the full disc is illuminated. Pixels scales of the composite images vary from 2 to 4 kilometers per pixel. Surface features are best seen near the center of the disc, where the spacecraft is looking directly downwards; the contrast becomes progressively lower and surface features become fuzzier towards the outside, where the spacecraft is peering through haze, a circumstance that washes out surface features. The brighter region on the right side and equatorial region is named Xanadu Regio. Scientists are actively debating what processes may have created the bizarre surface brightness patterns seen here. The images hint at a young surface with no obvious craters. However, the exact nature of that activity, whether tectonic, wind-blown, fluvial, marine, or volcanic is still to be determined. The images comprising this mosaic were acquired from distances ranging from 650,000 kilometers to 300,000 kilometers.>>[/quote]