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Interesting facts about space.

The Cassini Imaging Team discovered Methone (pronounced me-thoh-nee) on June 1, 2004. This tiny moon orbits between two of Saturn's mid-sized icy moons, Mimas and Enceladus, at a radius of about 194,000 kilometers (120,456 miles) from its planet. Astronomers have suggested two differing theories to explain the presence of Methone and two other small sister moons, Pallene and Anthe. The first theory indicates that the three little moons may have fragmented off of either Mimas or Enceladus. The second theory, on the other hand, suggests that all five moons--the three small moons and the two mid-size ones--may be the sad remnants of a larger menagerie of moons that floated around in that area--which is situated close to Saturn. Methone orbits its gigantic parent planet in 24 hours.



and here is another

The discovery of a moon for Makemake may have solved one perplexing puzzle concerning this distant, icy object. Earlier infrared studies of the dwarf planet showed that while Makemake's surface is almost entirely frozen and bright, some areas seem to be warmer than other areas. Astronomers had suggested that this discrepancy may be the result of our Sun warming certain dark patches on Makemake's surface. However, unless Makemake is in a special orientation, these mysterious dark patches should cause the ice dwarf's brightness to vary substantially as it rotates. But this amount of variability has not been observed.



and finally

Enceladus: Enceladus has shown geysers of water that were confirmed by the Cassini spacecraft in 2005. Gravimetric data obtained from 2010 to 2011 confirmed the existence of a subsurface ocean. Even though originally it was thought to be localized, most likely in a region of the icy moon's southern hemisphere, evidence collected in 2015 indicates the subsurface ocean is actually global. Furthermore, in additon to water, these geysers from vents located near the south pole of Enceladus contain tiny quantities of salt, nitrogen, carbon dioxide, and volatile hydrocarbons. Tidal flux from Saturn is apparently responsible for the melting of the ocean water, as well as the geysers.

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You might ask the situation of the other nations which also possess space technology. Especially, Russia has made some advancements of her own, but the Russian space program is only a fraction of what it once was. Of course, there is also some work by the Chinese as well as by the Indians and even the Europeans are trying to develop new space programs.



There is yet another theory that planetary scientists have suggested to explain the mysterious Procellarum region. This analysis is based on recently acquired data, and it indicates that this region formed as a consequence of churning deep within the interior of our Moon. According to this model, this resulted in a high concentration of heat-producing radioactive elements in the lunar crust and mantle of this unique region. Planetary scientists studied the gradients in gravity data derived from GRAIL, which showed a rectangular shape in resulting gravitational anomalies.



Indeed, the mixture of nitrogen and methane that whirl around in Titan's swirling thick golden-orange atmosphere create a variety of organic compounds. It has been suggested that the heaviest materials float down to the surface of this hydrocarbon-slashed moon. When these organic compounds tumble down into Titan's lakes and seas--either by raining down from the clouds in alien showers of hydrocarbons, or by traveling along with Titan's strange rivers--some are dissolved in the liquid methane. The compounds that manage to survive this ordeal, and do not dissolve (such as nitrites and benzene), float down to the alien sea floors of this oddball moon-world.

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