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Curious facts about cosmic life and their inhabitants.

The moon's internal geological structure is very strange and unique. It has vast areas of hollow underground caves. This is because the moon passed through boiling and molten states before it cooled down to its stable present day temperature. Some caves are miles and miles in length and breath. These caves exist at varying depths below the moon's surface. Almost all the caves are internally connected to each other and it is possible to trace many paths through interconnected caves to fully 'circumnavigate' the moon without ever stepping out on to its outer surface. The tops of the caves that form the crust of the moon's surface are supported on massive vertical rock pillars that rise out of the bottom surface. These vertical support structures are very hard and rocklike and naturally contoured in shell like formations endowing them with heavy load bearing capabilities. To visualize the interior of these caves a comparable earth structure would be the NFL football domes. They would compare in size with some of the smaller caves but none of the caves in the moon are formed in a particular shape, pattern, length, breadth or height, and are quite irregular in shape. Surface terrain is also to a large extent irregular and variable.



and here is another

The temperatures around the equatorial and mid latitude surface at daytime and in the night are around 225oF and minus 298oF respectively. As the moon day is approximately 28 earth days, heating and cooling of the moon's surfaces affects the inside cave temperature significantly. The temperature difference in the opposite side of the moon makes the air in the cave move from one area to the other creating complex wind movements. When high speed wind flows across the vertical rock structures, it makes gurgling sounds in the caves, resulting in eerie or weird echo effects. The blowing wind helps to mitigate the high humidity conditions.



and finally

Triton was the second moon in our Solar System that was found to have a substantial atmosphere, which is primarily composed of nitrogen--with smaller quantities of carbon monoxide and methane. Discovered by William Lassell in 1846, only seventeen days after the discovery of Neptune, Triton is one of the most frigid worlds in our Solar System, with a surface temperature of only about 38 Kelvin. Triton's frozen surface is coated by nitrogen, carbon dioxide, methane, and water ices, and it has a high geometric albedo of more than 70%. Surface features include a large southern polar cap, ancient cratered planes that are cross-cut by scarps and graben, as well as much younger features thought to have been formed by endogenic processes like cryovolcanism (ice volcanoes).

Other facts:

Pluto has a tenuous atmosphere composed of nitrogen, methane, and extremely toxic carbon monoxide, which probably originates from the ice on its frigid surface. As Pluto wanders in its orbit ever closer and closer to our Sun, it becomes increasingly warmer and warmer. The ice on its strange surface evaporates as a result, and the gases flow into interplanetary space. This continues until Pluto starts to travel away from the Sun again, becoming increasingly colder and colder as it does so. Pluto's bizarre atmosphere again freezes, and then floats down to its very alien surface as snow--but it will evaporate again when Pluto begins its long journey back towards our Sun. It takes 248 years for the frozen dwarf planet to complete a single orbit around our Sun.



The beautiful, banded, blue ice-giant planet, Neptune, is the furthest major planet from the Sun. It is also orbited by a very weird large moon that may not have been born a moon at all. The moon, Triton, is about 1,680 miles in diameter, and sports features that eerily resemble those found on the dwarf planet Pluto. Pluto is a denizen of the Kuiper Belt. The Kuiper Belt is a reservoir of comets and other icy bodies--some large, some small--that circle around our Sun beyond the orbit of Neptune, at a distance of about 30 to 55 Astronomical Units (AU) from our Star. One AU is equal to the average distance of Earth from the Sun--approximately 93,000,000 miles.



The Cassini-Huygens mission is a collaborative NASA/European Space Agency/Italian Space Agency robotic spacecraft that is observing the Saturn system. The spacecraft was initially constructed to sport two components: One is the European Space Agency-designed Huygens Probe named in honor of the Dutch mathematician and astronomer Christiaan Huygens (1629-1695), who discovered Titan. Huygens also studied the rings of Saturn. The second component, the NASA-designed Cassini Orbiter, was named for the Italian-French astronomer Giovanni Dominico Cassini (1625-1712) who discovered four of Saturn's other moons. After a long, difficult journey through interplanetary space, that took it from Earth to Saturn, Cassini-Huygens finally reached the realm of the ringed planet on July 1, 2004. On December 25, 2004, the Huygens Probe was deliberately severed from the Cassini Orbiter, and began its descent down to the long-veiled and hidden surface of Titan--sending back, to waiting astronomers on Earth, an abundance of valuable information about the mysterious moon-world. Titan, at last, had its hidden face unveiled--revealing its well-kept secrets. The mission will continue until 2017.