Methane mystery of Mars and Titan fog triggered speculation of life 6.

World Scientific reports [tech.] News: According to "when the e-News" reported that the new issue of "Scientific American" published an article on the space life exists on Mars and the "Titan," the possibility is analyzed. .Article are summarized as follows: <P> Of all the planets in the solar system, in addition to Earth, the Mars can be recognized as the most potential for the birth of life, life may exist now, it could be used to have life. .Mars and Earth have many similar features, such as: the formation of the early history of climate, water storage, and volcanoes and other geological activities, these may be just what microbes need. .</ P> <P> while the other has often been included in the discussion, that there may be alien life exists, it is Saturn's largest moon - Titan (Titan, or "Titan"). .Titan generated just once conducive environment for the formation of life precursor molecules, some scientists believe there was life on Titan, or even the existence of life now Jiuzheng. .</ P> <P> to make these more interesting possibility is that these two celestial bodies when the astronomers have detected an often accompanied by the appearance of life, and life is closely related to the gas - methane. .Amount of methane on Mars though not many, but very significant; the Titan methane is almost covered. .</ P> <P> the possibility of methane from the bio, as much as possible from the geological activity, even in the Titan is not, at least on Mars is so. .These two possibilities explain the different ways the emergence of methane, and are quite reasonable, which shows that we in the universe may be not so lonely, or is under the ground of Mars and Titan, have a lot of liquid water, and with .Geochemistry of the unexpected events. .If you can understand the source of these objects and the fate of methane, will be crucial clues to enable us to better understand the solar system and even those outside the solar system objects like the Earth, including the shaping process of evolution and the possibility of life .. .</ P> <P> Jupiter, Saturn, Uranus and Neptune, the giant planets, the high content of methane, which is the original solar nebula after by the chemical reaction product. .However, in the Earth's atmosphere, methane is in a special gas, content of only 1750ppbv (1ppbv that the volume ratio of one in 1.0 billion), of which 90 to 95% from bio. .Herbivorous hoofed animals such as cattle, sheep and yaks, etc., methane emissions from the annual global methane emissions account for 1 / 5; these gases from the intestines where they are after the metabolic products of bacterial action. .Other important sources include termites, rice paddies, swamps and natural gas (natural gas is formed by ancient life), as well as the equatorial rain forest plants also release methane (see the March 2007 number <plants, methane and global warming> ..) .</ P> <P> on Earth, volcanism of the total methane produced by less than 0.2%, and discharged through volcanism, and possibly methane produced by ancient organisms. .In contrast, the role of methane from non-life, for example, generated by industrial processes, it is not so important. .Therefore, once the other similar objects on the Earth to detect methane, natural objects have also enhanced the possibility of life. .</ P>.