In the huge rest module, Hua Feng, Yun Meng, and Bai Feng were wearing special sky-blue spacesuits, and several people sat together, waiting for Titan's arrival, their rest module was also next to each other, and there were some young people from the Flying Dragon Camp and other parts of China. They even reviewed Titan material in the process.

From the porthole of the spaceship, I saw the dark cosmic space, occasionally there were flashes of light, as the first interstellar voyage Hua Feng suddenly had a feeling of talking around the fireplace, after eating, he and the people around him entered a meditative state.

Hua Feng knew that Nish admitted that his research work was not ideal for presenting the chemistry of Titan's atmosphere, and she said, "The Solins formed in the low-pressure state is more like the Titan mist than the high-pressure state, and you can use ultraviolet light to make the Solins in the low-pressure state, but you can't use the plasma release to make the Solins in the low-pressure state." The large amount of sollins needed for our experiments had to be manufactured by electrical discharge technology, and only a small fraction of it could be generated by photodecomposition by ultraviolet light. ”

Niš's study does not provide a complete picture of the chemistry of the planet Titan, which showed that similar chemical reactions can produce significant amounts of organic mixtures in a liquid water environment.

On Titan's surface, pre-life-origin molecules may have been found in collision craters and meltwater from ice volcanoes, and processes like this probably occurred in the early days of life on Earth, when significant amounts of oxygen were not present in the Earth's atmosphere in the early days.

Saturn's great moon Titan has a magical surface environment in the solar system, and a world full of liquid methane and hydrocarbons could host interesting life.

Astrobiologists and chemists at Cornell University in the United States believe that Titan is in many ways the twin brother of the Earth, Titan is the largest moon in the solar system, larger than Mercury, has a slightly higher atmospheric pressure on the surface than the Earth, and also has an atmosphere. What's more, Titan is the only planet in the solar system other than Earth to have liquid material on the surface, and the Cassini probe discovered lakes and rivers on Titan, and even in the polar regions of Titan, scientists have discovered the largest lakes.

The Planetary Habitability Index takes into account a completely different set of factors, such as whether the planet's surface is rocky or frozen, whether the planet has an atmosphere, whether it has a magnetic field, etc.

Two index systems, the planetary habitability index and the earth similarity index, were designed to rank the possibilities of planets with possible extraterrestrial life. The two types of index systems are the planetary habitability index and the earth similarity index. According to the evaluation results of scientists, Saturn's largest moon Titan and exoplanet Gliese 581g respectively topped the list of habitable planets in the two major indicators, and are considered the most habitable alien worlds. The exoplanet Gliese 581g is located in the constellation Libra, about 20.5 light-years from Earth.

Titan (Hype

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) is one of Saturn's larger moons, orbiting Saturn farther away from its largest moon, Titan (they orbit with a radius of about 1.6), orbiting Saturn in about 21.3 days.

Due to the large eccentricity of Titan orbit (0.03) and the gravitational pull of Saturn and Titan, its rotation period changes frequently, which is very special among all the moons of the solar system. Iapetus is roughly approximate an ellipsoid with a triaxial length of 360×280×225 kilometers and a mass of 800 trillion tons.

It has a very irregular shape, which is caused by a severe fall. Its surface appears to be the oldest, with numerous craters, the largest of which is about 120 kilometers in diameter and 10 kilometers deep. Its surface is covered with honeycomb-shaped pits that look like a giant durian. According to a recent report by New Scientist magazine, the Cassini probe recently discovered a peculiar phenomenon during its flyby by Titan——— Saturn's moon does not have a constant axis of rotation. Before Cassini, the Voyager probe had taken more than 20 pictures of Titan, but scientists were unable to discover the moon's unique orbit due to its distance.

Astronomers still don't know if Titan is the remains of another celestial body. Scholars see Titan as the largest piece of "cosmic debris" in the solar system, but it is not yet clear how it came to be due to the lack of other fragmentary "details" in its vicinity. The 360-kilometer-long, 225-kilometer-thick satellite is covered with craters of varying sizes, and only a quarter of the sunlight hitting its surface is reflected back into space, making it difficult to accurately observe it from Earth.

Titan looks like it can only rotate steadily in two directions (physicists call objects of this shape an asymmetrical rotator). However, due to the influence of the planets of the solar system and other moons of Saturn, Titan rotates so irregularly that it is difficult to predict when it will be "day" and when it will be "night".

The condition of the moon's surface can be seen from the images of Titan released by NASA, and the different colors of the photos represent differences in the composition of the ground material. The original image was taken by Cassini with a precision camera on September 26 at a distance of 62,000 kilometers from Titan.

The Cassini spacecraft flew close by, revealing for the first time the details of Titan's surface, revealing that the cup-shaped crater was filled with hydrocarbons. This could indicate that there are more basic compounds needed for life in our solar system.

On top of the image of Titan taken by Cassini spacecraft, a map of the material composition of the two parts of the region is superimposed. Blue indicates the most exposed water ice. Red indicates "dry ice" (i.e., carbon dioxide ice). Magenta indicates a mixture of water and carbon dioxide. Yellow is carbon dioxide mixed with an unidentified substance.

When the Cassini spacecraft flew near Titan in September 2005, it used a variety of instruments to probe its secrets, photographing features such as craters on its surface, discovering water ice and dry ice, and dark matter with hydrocarbon spectral characteristics, and mapping the distribution of surface materials.

Planetary scientist Dale C

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Of particular interest, K) said, is the presence of hydrocarbons on Titan. Compounds with carbon and hydrogen atoms have been found in comets, meteorites, and the dust of the Milky Way.

These molecules are incorporated into ice and exposed to ultraviolet light to form new molecules of biological significance. However, this does not mean that life has been found, but further indicates that there are a wide range of basic compounds necessary for life in the universe.

The ultraviolet, visible, and infrared camera spectrometers on board the Cassini spacecraft captured details of Titan's surface, which allowed for the mapping of mineral and chemical signatures, confirming previous observations of the presence of frozen water in Titan from Earth. It was also found that dry ice mixed with ordinary water ice in an unexpected way. The image in the brightest area of Titan's surface shows frozen water that crystallizes like Earth. The ice on the surface of Titan is a mixture of frozen water and organic dust, while dry ice is also significant, Koresa Enke explained.

Spacecraft explorations of Saturn's other moons, as well as Jupiter's moons, Ganymede and Ganymede, have shown that carbon dioxide molecules are "complex" or attached to other surface materials in a variety of ways. We thought it would take a long time for ordinary carbon dioxide to evaporate from the surface of Saturn's moons, but when they attach to other molecules, they are much more stable, Koresa Enke said.

Cassini spacecraft scientist Hendricks (Ama

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ix) said that the flyby of Iapetus also showed the capabilities of Cassini's multi-band instrument, the first ultraviolet detection of Enceladus, telling us about the chemical differences of the bewildering satellite.

Scientists also reported that the presence of frozen water on Titan is consistent with previous ground observations. The new observations further found that although the frozen water of Titan is in the form of crystals like the frozen water on Earth, it is mostly mixed with organic dust to form "dirty ice", and dry ice is mixed with "dirty ice" in a peculiar way.

The composition of dry ice on Titan is also not pure, and its carbon dioxide molecules are combined with other molecules in some chemical combination. Previous explorations of Saturn's other moons, as well as Jupiter's moons, have also found that the carbon dioxide molecules on these moons are indeed impure, and many of them bind in different ways with other substances on the surface of the moons.

Krushank argues that attachment to other molecules may make the carbon dioxide molecule more stable, otherwise it would have evaporated long ago over the course of Titan's long evolution. Scientists believe that new analysis of Titan's surface composition will help understand the origin of Saturn's moon and its evolution over 4.5 billion years.

NASA scientists used the Cassini probe to conduct a survey of Titan and took photos of it, which showed that the surface of Titan was full of holes that looked like a "sponge" and that these holes may also contain hydrocarbons, a discovery that indicates the widespread presence of chemicals needed for life in the Milky Way.

Peter Thomas, a scientist from the Center for Radio Physics and Space Research at Cornell University, and his colleagues published an article in an issue of the journal Nature that about 40 percent of Titan's surface is pore-like. As early as 2005 and 2006, Cassini had several close encounters with Iapetus and probed it.

Thomas said that Cassini took this photo very close to Iapetus, and the porous structure shown in the photo is also the first time we have discovered, which is of great significance for studying the secrets of the Saturn family.

Titan is the largest highly irregular (non-spherical) object in the solar system, with an orbit of 1,481,100 kilometers from Saturn and a 21.3-day orbit around Saturn. Titan is small and only 360 kilometers long at its longest point, but it is the largest of Saturn's irregularly shaped moons and one of the largest irregularly shaped objects in the solar system.

Due to its irregular shape, chaotic rotation and porous surface, scientists have previously suggested that Titan may have been peeled off a larger celestial body. Unlike Saturn's other moons, Titan has a smaller albedo (.2 - .3), suggesting that it is covered with at least a thin layer of dark matter.

New analysis results from Cornell University scientists suggest that Titan may have been formed by the accumulation of tiny particles of matter. Because the mass is too small and the gravitational force is not enough to compress itself, Titan retains its irregular shape. Large objects usually become compact by their own gravity, giving them a shape that is nearly spherical.

The porous structure is soft, so the traces left by meteorites on Titan are deeper than those formed by crashing into ordinary solid objects. Scientists estimate that Titan has a density of 544 kilograms per cubic meter, nearly half as light as water, meaning that the vast majority of its interior is porous.

In their research, scientists also found that the main component of Titan is ice, and it is mixed with organic impurities. This means that Titan is a "dirty ice sponge". Scientists believe that some other low-density objects, including some of Saturn's small moons in close proximity, may also have porous structures, although this needs to be further observed and verified.

The Cassini probe flew by Titan on September 26, 2005. As it approached Titan, the Cassini probe unexpectedly discovered that Titan was emitting a strong stream of charged particles, with voltages as high as 200 volts. The surface of Titan is likely to be electrostatic because it is bathed in charged particles from the Sun and Saturn.

From NASA's Ames Experiment Center and astronomer Del C. Crookshak (A. d'A

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"From the photographs, the bottom of these holes on the surface of Titan is so dark that it is impossible to judge the structure inside, which is very similar to the structure of parts of Titan and Titan."