What Did NASA Discover under Titan’s Thick Atmosphere?

we're determined to discover traces of Life on remote exoplanets so we cast our gaze far beyond the boundaries of the solar system and into the great abyss of space but actually just several hundred years ago a unique world was detected comparatively close to us there are clouds in its atmosphere it rains there and on its surface great rivers flow into lakes and seas still the conditions on this fascinating

Celestial body are lethal with a surface Bound by incredible cold so what is really happening on Titan.

Titan is located about 10 astronomical units from the Sun and is outside the habitable zone of our star it is Saturn's largest satellite at its orbit lies well outside the gray trains

at a distance of about 1 million two hundred thousand kilometers from the center of the planet the trajectory of the celestial body is close to Circular and a complete orbit

around the gas giant takes a little less than 16 Earth days

Titan's diameter is 5152 kilometers which is 5.6 percent

larger than that of Mercury at the same time the mass of the

celestial body is relatively small at only 1.35 times 10 to the power of 23 kilograms which is about 40 percent of mercuries calculations show that the satellite's average density is about three times less than that of the earth which means it has a completely different chemical composition

according to contemporary Concepts Titan has a massive core at its Center about 3400 kilometers in diameter and made up of various silicon compounds it is surrounded by thick layer of densely packed ice which is at the bottom of a cold liquid ocean hundreds of kilometers deep the ocean in its turn contains large amounts of dissolved ammonia methane and various caustic salts so that its freezing point is markedly lower than that of ordinary water for this reason

Titans subsurface ocean remains liquid even in Sub-Zero temperatures it is bound by thick crust around 100 kilometers thick consisting of a mixture of water ice and methane hydrate the tidal forces of the nearby Saturn are continuously deforming it causing massive Rifts and fractures this causes large cryovolcanoes to form ejecting great quantities of methane ammonia and water onto the surface of the celestial body methane plays about the same role in Titan's atmosphere as water vapor on Earth the fact is that the average surface temperature of the satellite is only

about 94 Kelvin or 179 degrees Celsius below zero which is slightly below its boiling point natural variations in this parameter cause hydrocarbon Vapors to condense and precipitate forming methane Seas lakes and rivers Titan's atmosphere is composed mainly of hydrogen which makes up about 98.4 percent of its volume while methane accounts for about 1.6 percent due to its extremely low temperature the satellite's atmosphere remains condensed near its surface and the Ring of the mountains surrounding it is less than 500 meters high most of the surface of the celestial

body is permanently obscured from our eyes by multi-layered clouds and an orange yellow soul in Haze this unique

weather phenomenon is a fog formed by tiny droplets of liquid methane and dissolved organic matter which gives

Titan its characteristic Hue this Haze pervades Titan's surface absorbing and scattering visible light but

transmitting infrared light this peculiarity leads to an unusual

anti-greenhouse effect which cools the satellite's Surface by roughly another 10 degrees this effect makes Titan difficult to explore but thanks to the cassini's orbiter's infrared cameras Titan was in Parts mapped out earlier this century

of course it is not as accurate as we would prefer but even this much is enough to outline the most striking features of the celestial body's surface the face of Saturn's largest moon is full of contrasting spots some of these reflect Mouse to the light that falls on them.

While others are relatively dark in color one such area is slightly south of the Equator and is called Aslan one of Titan's highest mountains Mount Doom or Doom mons is located here towering about one and a half kilometers above the surrounding Plains the hell Mountain reaches up to 60 kilometers in diameter its Summits are craters and its slopes have relatively fresh traces of turbulent flows this may

suggest that doomans is an active cryo volcano to the Northeast from it is Titan's deepest depression called satrapatra it has a giant depression about 30 kilometers long the bottom of which is located about two kilometers below the adjacent Plains it is thought to be the mouth of a huge

cryo volcano and is part of a single tectonic structure along with do mons located close by to the north of Dum mons there stretches the immense mahini fluctus a vast area

covered by Doom monza's ejections the area extends for about 180 kilometers and varies in width from 15 kilometers in the South to 60 kilometers in the North where torrents of Frozen material ordinate with expansive fields of sand dunes consisting of a mixture of Frozen methane and Water Ice.

Our flight will continue over the dark area of fencil the largest impact crater of the celestial body Minerva is located in its

Northwestern part it reaches 440 kilometers in diameter which is about three times larger than any other crate

on Titan the depression is about 200 meters deep and the Ring of the mountains surrounding it is less than 500 meters

high the fact is that according to studies Minerva is not only the largest but also the eldest extant crater on Titan different estimates put the age of the crater at between 300 million and 1.2 billion years erosion and tectonic processes have severely damaged the crater and it is only thanks to its sheer size that it is still visible Minerva has a well-defined internal structure

at its Center there is a small flat plane surrounded by a ring of hills this region with a total diameter of about 200 kilometers is rather light and clearly visible from space it is surrounded by so-called moats a stretch of dark Plains about 50 kilometers wide this is followed by a ring of low mountains that form the outer boundary of the crater.

Our flight next takes us to the South here is one of Titan's most impressive and mysterious landmarks Jose Arcus this is a unique formation in the solar system it is a bright arc-shaped region about 600 kilometers long radar data from Cassini shows that hote Arcus is a natural boundary between the Rocky Mountains in the Northeast and a wide Valley in the northwest it is also noteworthy that some parts of this area change color from time to time this phenomenon is thought to be linked to the eruptions of cryovolcanoes whose emissions cover the surface of the satellite in a thin layer and then flow

into a nearby Valley or evaporate into the atmosphere from space one can clearly see light channels similar to riverbeds running from the mountains of the hotel Reggio to the Northwest this is where Xanadu is located which is a vast lowland area with highly rugged terrain Northwest boundaries formed by mithrimontes which are three parallel ridges stretching for about 150 kilometers with an average height of 1.9 kilometers among the peaks of the Southern range is the highest peak on Titan reaching 3337 meters standing on top of it and looking West you can see a vast dark plane stretching several hundred kilometers in front of you it is called Shangri-La and it is thought that this whole area used to be flooded with liquid methane it is assumed that it may have persisted beneath the topsoil similar to the Earth's underground water most of this region is below average elevation and has a comparatively flat terrain but lighter Hills can be seen in some places in the past these may have been islands in the middle of a hydrocarbon sea to the west of Shangri-La is the bright adiri Upland area clearly visible against dark regions around it the area extends for up to two and a half thousand kilometers and is a veritable network of numerous drainage canals and caves clearly visible in the

photographs these are thought to have been formed by

Abundant flows of liquid hydrocarbons to the west of adiri is the vast dark lowland area of balat and to the east near the border with Shangri-La is the highgens landing site so far the only vehicle that got touched down on the surface of an object in the outer solar system The Descent probe was part of a science program called Cassini Huygens together with the Cassini automatic probe it left Earth in 1997 to spend

seven years in interplanetary space the spacecraft entered the orbit of Saturn early in 2004 and in early 2005 Huygens reached Titan and plunged into its atmosphere towards new discoveries Cassini on the other hand remained in orbit around a gas giant to carry out its part of the research program as well as to continue serving as a transponder

for the Lander the probe spent just under two and a half hours in the atmosphere gradually dropping speed using a sophisticated parachute system eventually by the time it touched down on the surface its speed was 4.4 meters per second the probe successfully withstood a momentary 15-fold overload and soon went on to collect information Huygens was equipped with a vast array of scientific instruments most of which were designed to study different aspects for the satellite's atmosphere the probe used them to measure the strength and direction of air currents as well as the electrical conductivity temperature and composition of the atmosphere the probe also took photographs and made

audio recordings and on Landing it examined the composition and properties of the ground the first thing the cameras saw after making contact with the surface was a flat plane dotted with rounded rocks of various sizes the shape of which clearly

indicated the impact of powerful fluid currents a special drill was also used to sample the surface penetrating 15 centimeters into the ground while multiple sensors measured its density texture and composition turned out that a thin layer of small rounded Pebbles lay on a relatively soft

but dense substrate similar inconsistency to wet sand or

dense snow also methane gas was released during the drilling process the ground of the Huygens Landing site is believed to have been like sea sand saturated with liquid hydrocarbons

in total the probe transmitted around 500 megabytes of information to Earth including 350 photographs further careful analysis revealed several unique features of the celestial

body related to its atmosphere for example it turned out that at an altitude of about 80 kilometers there is a layer of almost complete calm as if separating Titan's atmosphere into two parts neither air currents of the upper atmosphere nor Winds of the surface reach this layer what caused this phenomenon is not yet known another feature is that Titan has two ionospheres the first of these is located at an altitude of about 1200 kilometers it is a layer of heightened electrical conductivity with a large concentration of ionized particles

this layer is known to be formed by Stellar Wind streams and Cosmic radiation the second ionosphere lies much lower at

an altitude of about 60 kilometers and the reason for its formation is still debatable moving Northwest from the adiri area will reached Titan's largest hydrocarbon. Reservoir the Kraken Mare its total area reaches 400 000 square kilometers which is slightly smaller than the Black Sea due to the high

viscosity of the liquid hydrocarbon mixture it has not yet been possible to measure the exact depth of the reservoir

it is only known that in most of the area it is over 200 meters

another large natural Basin the liegea mare is located slightly to the North near Titan's Pole its diameter reaches 500 kilometers and its area is about a hundred thousand square kilometers which is about three times larger than Lake Baikal the seas are connected to each other by the narrow and long Travis fretum 173 kilometers long also in the South polar region there are many smaller lakes and lagoons filled with liquid methane in 2014 analysis of earlier images beamed back by Cassini revealed a large bright object on the surface of the lygium air on comparing photographs taken at different times it was established that within a few months the mysterious object had grown to 260 kilometers in diameter to disappear almost instantly Without a Trace several hypotheses have been put forward to explain it according to one of them temperature differences lead to a constant staring of layers of liquid hydrocarbon mixture in the large GM air this causes nitrogen bubbles to form and rise to the surface from the depths of the reservoir and thus form large clusters of persistent shiny foam due to the high viscosity of the hydrocarbons such bubbles can reach 4.5 centimeters

in diameter and remain stable for months from space these structures resemble large islands because they reflect

infrared radiation well such bubbles would have been a

significant hindrance to the operation of a submersible probe which was scheduled to be launched to tighten back in 2010.

however the mission was postponed indefinitely for various reasons a higher priority was given to the dragonfly program which NASA is working on now the vehicle is currently in the design phase and has just recently passed key tests with blades the launch from Earth is scheduled for 2027. As conceived by its creators dragonfly will be a noctocopter an aircraft with four twin propellers this design will allow it to stay in the air even if it loses several blades unlike its predecessor the Ingenuity Mars helicopter a radioisotope thermo generator powerful enough to enable the vehicle to climb to a height of four kilometers and travel at a speed of about 36 kilometers per hour will be used as the power source the scientific capabilities of the probe are also impressive it will be equipped with a versatile camera capable of producing both panoramic photographs or the surrounding terrain and macro images of the ground at the same time the mass spectrometer will make it possible to determine the chemical composition of atmospheric samples and the internal structure of rocks perhaps dragonfly's data will help us clarify an important question do we at least have a chance of encountering primitive life the possibility of Life on Titan remains hotly debated on the one hand the extremely low

surface temperature the presence of extremely toxic hydrocyanic acid in the atmosphere and the absence of liquid

water would likely rule out the presence of biological Life as We Know It Titan's atmosphere on the other hand exhibits an incredible diversity of organic compounds nitrogenous bases and amino acids which are the building blocks of proteins RNA and DNA could be naturally synthesized on its surface

it is also known that liquid methane can serve as a solvent and potentially play the role of water in biochemical reactions

in addition experiments show that under certain conditions a mixture of liquid hydrocarbons with phosphane forms an

environment similar to the primordial soup of the early Earth

this means there's a chance of encountering downright exotic forms of life on the surface of the satellite.

Titan is a unique World fascinating and mysterious winds and rainfalls are common on its surface which is crossed by Rivers so similar to those on the Earth but so different at the same time for all we know there is much more to the universe than we can imagine and it's not everywhere that life looks The Way We Know It could this phenomenon that we've been

painstakingly trying to detect on trillions of planets around us

actually be pretty much in our backyard.