UPDATE 3/4/2013: I was recently reading how they found a river on Titan that was eerily similar to the Nile river here on Earth. The sky was deep orange, and the brightness of the Sun was a thousand times less than sunlight on Earth (but still more than a hundred times brighter than under the full moon on Earth). (2008) argue indicates the presence of liquid ethane. The panels on the right show the morphologic mapping units identified by Birch et al. 2012a, Wall et al. Presumably it also has a similar composition—about half ice and half rock. The bottom detail shows a close-up of the western shoreline of the paleomare basin depicted in the bottom mosaic that contains Ontario Lacus. Titan is the largest moon of Saturn and the second-largest natural satellite in the Solar System. Similarly, the morphology of lacustrine basins chronicles the history of the polar landscape over multiple temporal and spatial scales. The green-shaded region highlights the expected range of threshold wind speeds (U10th) for liquid viscosities (vf) ranging from pure methane (lower threshold) to pure ethane (upper threshold). Legal. (2016a) found that they are regionally correlated (Figure 5).... ...Mars and Titan have a dearth of small lakes relative to their cumulative totals (Figure 5).... ...acetylene) with deposit thicknesses sufficient to accommodate SEDs with depths of up to 600–800 m (see Figure 5). The relative topography of the mapped units is represented by the vertical arrangement of boxes in the central legend. Titan is thought to have several layers: a rocky core, surrounded by layers of crystalline ice. Thus, Titan has a low-temperature equivalent of the water cycle on Earth, with liquid on the surface that evaporates, forms clouds, and then condenses to fall as rain—but on Titan the liquid is a combination of methane, ethane, and a trace of other hydrocarbons. Scientists believe that Titan experiences seasons, has clouds that rain and has an atmosphere made largely of nitrogen, just like ours. Although the surface pressure of this atmosphere is only 16 millionths of a bar, this is sufficient to support thin haze or cloud layers. Panel a is generated from NASA press release PIA12481, and panel d is adapted with permission from figure 1 (NASA PIA18433) and figure 4 of Barnes et al. Figure 3: Schematic of supraglacial stream and river processes. Just as Earth has a water cycle, Titan has a methane cycle: There are seasonal rains, the methane rain fills up lakes, the lakes eventually evaporate and the vapor ascends into the clouds, starting the whole thing over again. Aside from being the only body beyond Earth that has a dense, nitrogen-rich atmosphere, it also has methane lakes on its surface and methane clouds in its atmosphere. 2011). Figure 3: Hypotheses of phylogenetic relationship among Spiralia. First published online as a Review in Advance on April 27, 2016 Figure 6: Articulated brachiopod dorsal valve interiors illustrating mineralized lophophore supports tallied in Figure 7. The 1980 Voyager flyby of Titan determined that the surface density of its atmosphere is four times greater than that on Earth. Figure 7: (a) Histogram of the number of genera per Phanerozoic time period possessing one of five different types of mineralized lophophore supports or no mineralized support at all, counted (S.J. Thus, Titan has a low-temperature equivalent of the water cycle on Earth, with liquid on the surface that evaporates, forms clouds, and then condenses to fall as rain—but on Titan the liquid is a combination of methane, ethane, and a trace of other hydrocarbons. (2014). The moon's surface is covered in … Saturn's largest moon, Titan, is a mysterious place; and the more we learn about it, the more surprises it seems to have in store. Like lakes on Earth and early Mars, Titan's lakes and seas preserve a record of its climate and surface evolution. (2014).

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