How To Build A Submarine.
The process of submarine manufacturing isn't less complex than building of a space ship. A giant submarine is a fruit of team work of dozens of thousands of peaple. And it is not a job of workers only but job of scientists in design bureaus, metallurgists and millitary specialists too. Several years may pass from the starting moment for design of new project till the moment of laying down a subsequent submarine and sometimes even decades. Builders and designers don't have a right for mistake. A negligently welded seam or badly placed wiring, the slightest mistake on bench test of devices can result to death of the crew or even to a global catastrophe. Building a nuclear submarine boat is a very serious business.
"Take aviation for example. They build several airplanes. They crash them, They break them and then start a serial production. While we can't do that. We build a boat and right after it was commissioned and passed trials it must go for combat patral."
Manufacturing of a submarine somehow resembles a building kit. Here they assemble disassemble and assemble back again in the same manner. Only that the parts of that building kit are many times more complex and bigger.
"This is a hull processing workshop. Construction of any ship starts exactly from metal cutting. Here they cut details from 12 meters long till so small like this one."
Thickness of metal sheets from where these parts get cut of can vary from 5mm to 20cm. Right here in the 5th workshop of Sevmash, those part will be polished to ideally even surface, they smooth out their edges and if it necessary they can bend them too and exactly under that angle which is demanded by the specific from of nuclear submarine. The hull processing workshop is probably the most automated and computerized in the entire enterprise. They don't cut anything by manual patterns from blueprints on tracing paper for long time already. All shapes are installed in computer's memory which controls the cutters. An experienced gas burner operator need one minute top in order to give computer an order to cut a new detail. And an experienced doesn't mean an elderly man. Many young people work in the 5th workshop.
New generation chooses new generation technology. "The job is interesting. We work with machinery and computers here. The job isn't physically difficult. We don't have to carry loads here. Everything is done by cranes. They explained the job to me once and I understood everything right away."
The future submarine which yet consists of dozen of thousands tiny fragment moves from the 5th workshop to the hull-welding workshop. Here the details turn to read fragments and sections of the future boat.
"The max dimensions of structures which we can produce here is up to 600 tons. Main occupations in our workshop are assembly operator of metallic vessels and electric welder."
However no matter how big these parts are or how much they weight, they still will be placed in the panoramic gammagraphy chamber. This hugh cylinder is an X-ray office. Only that they don't x-ray human body parts but submarine parts. Entire body sections can fit here in order to control the quality of every welded seam. The ship x-ray office of Sevmash works with its full capacity today. Five submarines are being simultaneously at the enterprise. Four of them belong to the latest, the 4th generation. After a forced break when works on all military orders were essentially frozen here, the hull-welding facility gets back to its normal pace of production now.
Maybe we wouldn't be able to produce all of main orders by the Navy, but regarding the tonnage of our production, during the last year while having less people, we produced as much as we producing in 1985 when the workshop started working with its planned capacity. The ready and checked section now move to the slip workshop on rails. There they take their placed on a slip train. This construction consists of girders placed on special carriages. The assembled hull of the submarine passes through hydraulic trials. If they passed successfully then the already formed construction gets cut to block-modules. All necessary devices and mechanisms get rolled in them from the open ends. Boat's systems, pipelines and wiring cables get mounted. The entire household stuffing of the boat gets installed in the slip workshop too, till washbasins and shower cabins.
Before the beginning of final assembly of the boat all the hardware planned to be installed, together will all new devices, weapon, electronics, pass long lab and field trials. Only after their successful completion, people of the plant start assembling the new boat's hull. The most important thing is to test the equipment of our co-exectives. To make sure that it works well. To work out the acoustics in the sea. Because imagine what will happen if it will go for service and its acoustics won't work? That will be a tragedy. The filled block-modules get connected and welded again. The strong hull is then dressed in a light hull. And the almost ready submarine passes workshop trails of every piece of equipment. If there are no problems in their operation then the sub gets out of the workshop to the World. And it gets lowered in yet dry reservoir of filling pool. Water gets pumped in there and the boat floats.
When people of Sevmash say "The ship is trying the water" they mean a water of this exact hugh filling pool. A ready ship gets out from the sheds exactly here. Here it comes to light. The size of the pool is impressive. However a nuclear submarine is also not a small vessel. When they place a huge body of the submarine here, the entire process reminds a washing of a hippo in a regular bathtub. Exquisite accuracy in ship control is demanded from tug crews, who push the boat to the gates of the filling pool. Sometimes the operation of talking a sub to big water takes an entire day light time. Since recent times subs get out from the pool not with help of tugs but inside an unique floating dock "Sukhona", which was also built at the Severnoye Mashinostroitelnoye Predpriyatie. The "Sukhona" takes the body of the boat when it is still on the ground. Then the dock goes into the water, and when it gets to open waters, it releases or pushes the boat out of its womb. This way is much safer.
However even this phase doesn't mark the end of building process. They will continue its finishing for a long time. Its hydroacustic system, hull's strength, correct work of all equipment will be tested over and over again. And only after the moment when all sub systems will get an ok from the manufacturer, designers and clients, it will be handed to Navy sailors for trials in the open sea. If they also complete with success, then the boat becomes a full worthy combat until of the Russian Navy.
Every lay down and every commissioning of new sub were always special days for Sevmash.It's beginning and an end of specific phase in life. Many events happen in lives of every Sevmashovets - some got his kids married, others went to retirement. It's a custom here to count the time itself by constructed boats. They say like "That happened when the "Guepard" was moved to water." or "That happened when the "Bars" was laid down." Lying down of ships is not a rare event in last 5 years. Four boat of the lastest generation are under construction and they will become a backbone of Russian submarine fleet in the future.
Here it is - the result of work of the entire plant - an almost ready combat boat - the nuclear submarine "Belgorod". Level of its completion is estimated approximately at 75%. And we can only hope that the State will find funds to complete it. The twin brother of tragically lost "Kursk" is located in the slip workshop of Northern Machinery-building Enterprise, since 1992. The "Belgorod", the nuclear submarine of the 3rd generation, the last submarine of project 949. Belgorod is completed by 3/4 already, but all work on its completion are practically frozen. Up there, they still can't decide to complete or not the construction. After the events with "Kursk", the Project recieved many improvements and upgrades. And the people of enterprise think that dragging time for completion of its construction is simply inadvisable.
We would like a lot to see a decision in favor of Russian Navy and we would hand on this boat to service of the Motherland. It's not difficult to understand the builders of Severodvinsk. Because the "Belgorod" is not just a piece of metal, which can be cut, molded, sold out, at any moment. It's a part of their life. An alloy of designers thoughts and work of thousands of masters. It's their dear child, whom they didn't abandon in the toughest times when salaries were not paid at Sevmash fpr months. So if the "Belgorod" wasn't betrayed then, in early 90s, and it wasn't cut to garden benches, then how is it possible to do that today? When the country remembered again its submarine fleet. To build is not the same with destroying. It's much more difficult. Especially when the speech is about construction of a nuclear submarine.
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Weapon in history - Degtyaryov light machine gun
Degtyaryov light machine gun
At 2nd of February 1940, a Pan-Union Elder Michail Ivanovich Kalinin was awarding medals and orders in the Kremlin.
"To the Hero of the Socialistic Labour comrade Degtyaryov, who received this high title for remarkable inventions and desidning of new, especially important weapons for the Red Army." Vasiliy Alexeevich Degtyaryov was awarded with the golden medal "sickle and Hammer" with number 2.The first Hero of Labour became Stalin himself, two weeks earlier.Degtyaryov created many examples of firearms during years of his working carreer.However the first and probably the most known of his creations is a "DP" light machine gun - Degtyaryov Pekhotniy (Gegryaryov for Infantry).
Weapon in History - DP light machine gun
SERGEY MAKAROV:Firearms expert of Central Museum of the Great Patriotic War said "The World War I had already revealed a necessity for Infantry units to have not only heavy machine guns but also more maneuverable machine guns aka light machine guns.Essentially this kind of weapon was born in fields of the World War 1 but neither the Russian Army, neither the Red Army at first stages of its existence hadn't their own light machine gun.Light machine guns of English French US origins were in the arsenal.There were attempts to convert a "Maxim" machine gun to a light machine gun.We can say that such attempt was successful and in 1925 a "MT" light machine gun was introduced into service. MT stands for Maxim-Tokarev.That means that conversion was done by Fyodor Vasilyevich Yokarev.Any way despite machine gun was named as a light one it still was bulky heavy unsatisfying high requirements addressed to this type of weapon."
Meanwhile the requirements were following,A light machine gun must be maneeuverable, i.e. light enough.By constantly remaining in an Infantry chain, it must increase unit's fire power in attack. It must be able to fire with it from any position standing up laying down on the move.Creation of a light machine gun following these requirements wasn't an easy task.
SERGEY MAKAROV said "The problem was solved in 1927 when the DP machine gun of Degtyaryov's design was introduced into service. DP - Degtyaryov Pekhotniy. The design is quite original and not borrowed. And for that moment of time, i.e. middle of 20s, it was a quite modern machine gun."
Caliber: 7.62 mm
Weight without a magazine - 8.4 kg.
Weight of magazine with round - 2.8 kg.
Magazine's capacity - 47 rounds.
Aiming range of fire - 1500 m (max distamce marked on iron sights).
Rate of fire - 600 rounds per minute.
Combat rate of fire - up to 80 rounds per minute.
Degtyaryov light machine gun was a totally new example positively different from all known machine guns of that time. Thanks to successfully selected system of automation.Degtyaryov managed to achieve light weight of the machine gun. The DP was also differing by extreme simplicty of production.For example time needed for manufacturing of Maxim machine gun was 700 hours. Meanwhile a DP needed only 130. In the battle DP was served by a machine gun operator and his assistant.Load magazines were kept and transported in a metallic box. It is visible in the background. Three disks in each box.
SERGEY MAKAROV said "DP machinegun was designed for use of rifle cartridge. It had such specifically shaped disk for 47 round. Well maybe this form is not the most convenient one but it was dictated by following conditions. First of all existing cartridge had to be used. And secondly magazine had to have the biggest possible capacity. So for a reason that carteidge had an extending rim a quite reasonable decision was taken to place rounds in a circle with bullet heads directing to the center. Thus a magazine received this shape. By the way it's not a first experience. There were machine guns with similar magazines before.Particularly a Lewis machine gun model 1915. Anyhow disk for this machine gun became quite capacious - 47 rounds. Having a technical rate of fire about 600 rounds per minute, its combat rate of fire was quite satisfactory for those times."
"Learn to shoot sharply. Here conscripts of Moldavian kolkhoz "Lyuchapyar Rozh" learnt a Degtyaryov light machine gun. Perfect aiming!"
Quite original tricks were used sometimes for firing. A rope was fastened to the machine gun and soldier was pressing a buttstock to his shoulder tighter with help of his leg. Fluctuations of the machine gun were reducing and fire accuracy was increasing. "8 bullets - 7 hits. Range - 300m. Target "light machine gun". By the way the enermy machine-gunner on the target is armed with an English Lewis machine gun which appeared in Russia in 1917. But with introduction of DP machine guns into service Lewis started being gradually retrieved from Infantry units and moved to warehouses for a while.
In 30s DP machine guns got a firm stand in arsenal of the Red Army. Their production was mostly satisfying troops's needs. But a necessary mobilization reserve of Degtyaryov light machine guns wasn't created.While in the first half of yhe 1941 when production lines were under reconstruction for production of new models of firearms production of DP was reduced to the minimum. Light machine guns were necessary at the frontline. At first days lack of them was compensated by those English Lewis machine guns. They are well seen on this photo of parade in November of 1941. DP machine gun became a base for creation of the first Soviet family of firearms for infan try tanks planes armored cars and ships.
A DA machine gun - Degtyaryov's for Aviation was created on basic of DP with minor changes. In contrast of infantry variant the aviation machine gun had a magazine with bigger capacity - 63 rounds. Buttstock's shape was different and was supplemented with a pistol hand grip. A twin aviation machine gun was introduced into service in 1930. A "tankoviy" (for tanks) version of Degtyaryov machine gun "DT" differed from version for infantry by a foldable metallic buttstock and a pistol hand grip. Capacity of its magazine is incresed to 60 rounds. DT was installed on many Soviet tanks and armored cars. DT machine gun could be used in field conditions too.If tank was out of order during battle then the crew was dismounting the machine gun leaving the vehicle and after mounting the machine gun on a bipod it could fire against the enermy.
Motorcycles were also equipped with a Degtyaryov machine gun. Meanwhile this device was allowing even to fire against aerial targets in case of necessity. However this machine gun despite that it was reliable and quite easy in use, also had disadvantages which were noted already during battles. The most important one we can consider was a fact that it couldn't maintain rapid rate of fire. The barrel of this machine gun had quite thin-walled and barrel change in the middle of the battle wasn't predicted. Because of that a length of burst was limited. It was necessary to wait for a barrel to be cooled down in order and don't bring the weapon out of order. Except that the recoil spring which is located here under jacket of the barrel, so it's located very closed to the barrel and during intensive fire, it was also overheating from the barrel and had a tendency to loose its temper which was affecting an uninterrupted operation of machine gun. By experience of its use in World War II, many of these factors were taken into consideration toward the end of the war and the machine gun was transformed into its modernized version known as DPM which had not so significant exterior differences nevertheless. Retaining its general scheme and feeding mechanism. For fire control this machine gun already had a pistol-like hand grip.
The bipod wasn't detachable loke on this machine gun but a non-detachable one and bipod's fastening became a bit different more convenient in use. While the recoil spring was relocated to a special tube in a trigger frame where of course it wasn't so affected by heating and was operating much more reliable.
DP was a fearsome weapon in hand of Soviet soldiers in battles at lake Khasan at river Halkin Gol. They were fighting with it in Finnish war too. DP light machine gun was beating the enermy at frontlines of the Great Patriotic War as well.
"Here is Ivan Gornostaev. He was a tractor driver before the war. Now his occupation is to destroy hitlerites. He killed 52 Germans in the first battle. The war turns teenagers into men."
Hundreds and thousands of the Red Army soldiers were protecting the Motherland with a machine gun in their hands. Degtyaryov Pekhotniy was supporting and covering many soldiers in their attacks. The road to the victory was very long but Degtyaryov light machine gun passed the entire war till Berlin itself together with infantrymen. It got its place rightfully in Victory parade of 1945.
At 2nd of February 1940, a Pan-Union Elder Michail Ivanovich Kalinin was awarding medals and orders in the Kremlin.
"To the Hero of the Socialistic Labour comrade Degtyaryov, who received this high title for remarkable inventions and desidning of new, especially important weapons for the Red Army." Vasiliy Alexeevich Degtyaryov was awarded with the golden medal "sickle and Hammer" with number 2.The first Hero of Labour became Stalin himself, two weeks earlier.Degtyaryov created many examples of firearms during years of his working carreer.However the first and probably the most known of his creations is a "DP" light machine gun - Degtyaryov Pekhotniy (Gegryaryov for Infantry).
Weapon in History - DP light machine gun
SERGEY MAKAROV:Firearms expert of Central Museum of the Great Patriotic War said "The World War I had already revealed a necessity for Infantry units to have not only heavy machine guns but also more maneuverable machine guns aka light machine guns.Essentially this kind of weapon was born in fields of the World War 1 but neither the Russian Army, neither the Red Army at first stages of its existence hadn't their own light machine gun.Light machine guns of English French US origins were in the arsenal.There were attempts to convert a "Maxim" machine gun to a light machine gun.We can say that such attempt was successful and in 1925 a "MT" light machine gun was introduced into service. MT stands for Maxim-Tokarev.That means that conversion was done by Fyodor Vasilyevich Yokarev.Any way despite machine gun was named as a light one it still was bulky heavy unsatisfying high requirements addressed to this type of weapon."
Meanwhile the requirements were following,A light machine gun must be maneeuverable, i.e. light enough.By constantly remaining in an Infantry chain, it must increase unit's fire power in attack. It must be able to fire with it from any position standing up laying down on the move.Creation of a light machine gun following these requirements wasn't an easy task.
SERGEY MAKAROV said "The problem was solved in 1927 when the DP machine gun of Degtyaryov's design was introduced into service. DP - Degtyaryov Pekhotniy. The design is quite original and not borrowed. And for that moment of time, i.e. middle of 20s, it was a quite modern machine gun."
Caliber: 7.62 mm
Weight without a magazine - 8.4 kg.
Weight of magazine with round - 2.8 kg.
Magazine's capacity - 47 rounds.
Aiming range of fire - 1500 m (max distamce marked on iron sights).
Rate of fire - 600 rounds per minute.
Combat rate of fire - up to 80 rounds per minute.
Degtyaryov light machine gun was a totally new example positively different from all known machine guns of that time. Thanks to successfully selected system of automation.Degtyaryov managed to achieve light weight of the machine gun. The DP was also differing by extreme simplicty of production.For example time needed for manufacturing of Maxim machine gun was 700 hours. Meanwhile a DP needed only 130. In the battle DP was served by a machine gun operator and his assistant.Load magazines were kept and transported in a metallic box. It is visible in the background. Three disks in each box.
SERGEY MAKAROV said "DP machinegun was designed for use of rifle cartridge. It had such specifically shaped disk for 47 round. Well maybe this form is not the most convenient one but it was dictated by following conditions. First of all existing cartridge had to be used. And secondly magazine had to have the biggest possible capacity. So for a reason that carteidge had an extending rim a quite reasonable decision was taken to place rounds in a circle with bullet heads directing to the center. Thus a magazine received this shape. By the way it's not a first experience. There were machine guns with similar magazines before.Particularly a Lewis machine gun model 1915. Anyhow disk for this machine gun became quite capacious - 47 rounds. Having a technical rate of fire about 600 rounds per minute, its combat rate of fire was quite satisfactory for those times."
"Learn to shoot sharply. Here conscripts of Moldavian kolkhoz "Lyuchapyar Rozh" learnt a Degtyaryov light machine gun. Perfect aiming!"
Quite original tricks were used sometimes for firing. A rope was fastened to the machine gun and soldier was pressing a buttstock to his shoulder tighter with help of his leg. Fluctuations of the machine gun were reducing and fire accuracy was increasing. "8 bullets - 7 hits. Range - 300m. Target "light machine gun". By the way the enermy machine-gunner on the target is armed with an English Lewis machine gun which appeared in Russia in 1917. But with introduction of DP machine guns into service Lewis started being gradually retrieved from Infantry units and moved to warehouses for a while.
In 30s DP machine guns got a firm stand in arsenal of the Red Army. Their production was mostly satisfying troops's needs. But a necessary mobilization reserve of Degtyaryov light machine guns wasn't created.While in the first half of yhe 1941 when production lines were under reconstruction for production of new models of firearms production of DP was reduced to the minimum. Light machine guns were necessary at the frontline. At first days lack of them was compensated by those English Lewis machine guns. They are well seen on this photo of parade in November of 1941. DP machine gun became a base for creation of the first Soviet family of firearms for infan try tanks planes armored cars and ships.
A DA machine gun - Degtyaryov's for Aviation was created on basic of DP with minor changes. In contrast of infantry variant the aviation machine gun had a magazine with bigger capacity - 63 rounds. Buttstock's shape was different and was supplemented with a pistol hand grip. A twin aviation machine gun was introduced into service in 1930. A "tankoviy" (for tanks) version of Degtyaryov machine gun "DT" differed from version for infantry by a foldable metallic buttstock and a pistol hand grip. Capacity of its magazine is incresed to 60 rounds. DT was installed on many Soviet tanks and armored cars. DT machine gun could be used in field conditions too.If tank was out of order during battle then the crew was dismounting the machine gun leaving the vehicle and after mounting the machine gun on a bipod it could fire against the enermy.
Motorcycles were also equipped with a Degtyaryov machine gun. Meanwhile this device was allowing even to fire against aerial targets in case of necessity. However this machine gun despite that it was reliable and quite easy in use, also had disadvantages which were noted already during battles. The most important one we can consider was a fact that it couldn't maintain rapid rate of fire. The barrel of this machine gun had quite thin-walled and barrel change in the middle of the battle wasn't predicted. Because of that a length of burst was limited. It was necessary to wait for a barrel to be cooled down in order and don't bring the weapon out of order. Except that the recoil spring which is located here under jacket of the barrel, so it's located very closed to the barrel and during intensive fire, it was also overheating from the barrel and had a tendency to loose its temper which was affecting an uninterrupted operation of machine gun. By experience of its use in World War II, many of these factors were taken into consideration toward the end of the war and the machine gun was transformed into its modernized version known as DPM which had not so significant exterior differences nevertheless. Retaining its general scheme and feeding mechanism. For fire control this machine gun already had a pistol-like hand grip.
The bipod wasn't detachable loke on this machine gun but a non-detachable one and bipod's fastening became a bit different more convenient in use. While the recoil spring was relocated to a special tube in a trigger frame where of course it wasn't so affected by heating and was operating much more reliable.
DP was a fearsome weapon in hand of Soviet soldiers in battles at lake Khasan at river Halkin Gol. They were fighting with it in Finnish war too. DP light machine gun was beating the enermy at frontlines of the Great Patriotic War as well.
"Here is Ivan Gornostaev. He was a tractor driver before the war. Now his occupation is to destroy hitlerites. He killed 52 Germans in the first battle. The war turns teenagers into men."
Hundreds and thousands of the Red Army soldiers were protecting the Motherland with a machine gun in their hands. Degtyaryov Pekhotniy was supporting and covering many soldiers in their attacks. The road to the victory was very long but Degtyaryov light machine gun passed the entire war till Berlin itself together with infantrymen. It got its place rightfully in Victory parade of 1945.
[Death of the universe?](7 End)
Death of the universe?(7 End)
Astronomers have much to learn about the influence of dark energy and dark matter.And much of the newest information is coming from this probe in deep space.It's sending back information that's helping scientists to interpret the history and the fate of the universe.The night sky by all appearance is a quiet and peaceful place.But in reality there are forces that are driving it to an end.Big Science moves astronomers closer to deciphering the universe's great mysteries.Including its ultimate fate.
The solution to the universe's riddle may well be hidden in this multi-colored image.What's incredible is that it's a map of the early universe from the moment it was conceived.And even more fantastic, it reveals a great story that helps cosmologists predict how it will end?The machine that captured this is called WMAP a NASA satellite that's working around the clock to chart the cosmos.
WMAP is one of the great astronomical breakthroughs of the 21st Century.Nothing before it could give us such a clear image of the energy leftover from the Big Bang.Energy that scientist call the cosmic microwave background.WMAP is measuring temperature differences in the cosmic microwave background which may finally make it possible to predict which force will dominate the universe and how that force will bring the cosmos to its end.
Temperature difference revealed by WMAP tell scientists about the nature of the matter and energy that is contained within the universe.They're able to be analyze the light patterns and find clues not only about the substance but also the fate of the universe.We only capture a tiny part of the electromagnetic spectrum with our eyes.And we have to go with much longer wavelengths.Same wavelengths that are used to heat in a microwave oven are what we're measureing here with WMAP.
WMAP is so precise that it can detect differences in temptures as small as one one-thousandth of a degree.This sensitivity helps scientists to calaulate the ratio of dark matter to dark energy.Force that will determine how the universe ends.
Pulling away from the probe and following the path of the light it is collecting, we pass Mars, Jupiter and Saturn whose reflected light takes over an hour to reach Earth.Then leaving the Milky Way, we pass Andromeda, the next nearest galaxy, whose light takes 2.3 million years to reach us.Which means we have traveled 2.3 million years back in time.
And finally we arrive back thirteen billion years ago at the beginning of visible light.Before that super heated hydrogen gas is everywhere.WMAP can see this far back in history.It's confirming important facts about the universe and what's driving it to its demise.The final act for the universe becomes more easily predicted thanks to WMAP.It's information combined with the work of astronomers has led to some astounding discoveries concerning a rapidly expanding universe.Rapid expansion supports the dark energy theory and the possibility of a Big Chill or Big Rip.
We now know from all the data we've had in the last ten years that there's by a factor of two to one more dark energy than dark matter.So dark energy is the dominant constituent of energy in the universe.The evidence seems clear.Dark energy is taking over and is leading astronomers into new thoughts about the beginning and the end of the universe.
Before the discovery of dark energy, things were a lot simple.If we could determine the amount of matter in the universe then we could say something about its ultimate destiny.Those simple days are gone.But the proof is adding up and supports the idea that the universe will continue to expand.But will it do so to oblivion? We've made huge strides over the last century is learning somethng about evolution of the universe and its expansion.But we've now raised more questions in some sense than we've been able to answer.And so the next decade's going to be even more exciting.
The battle between dark matter and dark energy is expected to go on for billions of years.And humans will be long gone from Earth when the final outcome occurs.But no pursuit has been more significant to science than understanding how the universe arrived, how it works and how it will end.It's a never ending quest.It's a driving astronomy.What are the answers to these profound questions? The constituents of the universe, the nature of dark matter and perhaps the biggest mystery of all, what is the ultimate fate of the universe?
Death of the universe?(1)
Death of the universe?(2)
Death of the universe?(3)
Death of the universe?(4)
Death of the universe?(5)
Death of the universe?(6)
Astronomers have much to learn about the influence of dark energy and dark matter.And much of the newest information is coming from this probe in deep space.It's sending back information that's helping scientists to interpret the history and the fate of the universe.The night sky by all appearance is a quiet and peaceful place.But in reality there are forces that are driving it to an end.Big Science moves astronomers closer to deciphering the universe's great mysteries.Including its ultimate fate.
The solution to the universe's riddle may well be hidden in this multi-colored image.What's incredible is that it's a map of the early universe from the moment it was conceived.And even more fantastic, it reveals a great story that helps cosmologists predict how it will end?The machine that captured this is called WMAP a NASA satellite that's working around the clock to chart the cosmos.
WMAP is one of the great astronomical breakthroughs of the 21st Century.Nothing before it could give us such a clear image of the energy leftover from the Big Bang.Energy that scientist call the cosmic microwave background.WMAP is measuring temperature differences in the cosmic microwave background which may finally make it possible to predict which force will dominate the universe and how that force will bring the cosmos to its end.
Temperature difference revealed by WMAP tell scientists about the nature of the matter and energy that is contained within the universe.They're able to be analyze the light patterns and find clues not only about the substance but also the fate of the universe.We only capture a tiny part of the electromagnetic spectrum with our eyes.And we have to go with much longer wavelengths.Same wavelengths that are used to heat in a microwave oven are what we're measureing here with WMAP.
WMAP is so precise that it can detect differences in temptures as small as one one-thousandth of a degree.This sensitivity helps scientists to calaulate the ratio of dark matter to dark energy.Force that will determine how the universe ends.
Pulling away from the probe and following the path of the light it is collecting, we pass Mars, Jupiter and Saturn whose reflected light takes over an hour to reach Earth.Then leaving the Milky Way, we pass Andromeda, the next nearest galaxy, whose light takes 2.3 million years to reach us.Which means we have traveled 2.3 million years back in time.
And finally we arrive back thirteen billion years ago at the beginning of visible light.Before that super heated hydrogen gas is everywhere.WMAP can see this far back in history.It's confirming important facts about the universe and what's driving it to its demise.The final act for the universe becomes more easily predicted thanks to WMAP.It's information combined with the work of astronomers has led to some astounding discoveries concerning a rapidly expanding universe.Rapid expansion supports the dark energy theory and the possibility of a Big Chill or Big Rip.
We now know from all the data we've had in the last ten years that there's by a factor of two to one more dark energy than dark matter.So dark energy is the dominant constituent of energy in the universe.The evidence seems clear.Dark energy is taking over and is leading astronomers into new thoughts about the beginning and the end of the universe.
Before the discovery of dark energy, things were a lot simple.If we could determine the amount of matter in the universe then we could say something about its ultimate destiny.Those simple days are gone.But the proof is adding up and supports the idea that the universe will continue to expand.But will it do so to oblivion? We've made huge strides over the last century is learning somethng about evolution of the universe and its expansion.But we've now raised more questions in some sense than we've been able to answer.And so the next decade's going to be even more exciting.
The battle between dark matter and dark energy is expected to go on for billions of years.And humans will be long gone from Earth when the final outcome occurs.But no pursuit has been more significant to science than understanding how the universe arrived, how it works and how it will end.It's a never ending quest.It's a driving astronomy.What are the answers to these profound questions? The constituents of the universe, the nature of dark matter and perhaps the biggest mystery of all, what is the ultimate fate of the universe?
Death of the universe?(1)
Death of the universe?(2)
Death of the universe?(3)
Death of the universe?(4)
Death of the universe?(5)
Death of the universe?(6)
[Death of the universe?](6)
Death of the universe?(6)
Hubble sees more than just stars and galaxies.It just might be on to one of the key ingredient of space.An invisible ingredient that could put the brakes on dark energy's effect and cause a Big Chill.That's dark matter.Scientists talk about dark matter as the substance that holds the universe together and could prevent a Big Rip.Evidence that dark matter exists is seen in some of Hubble's images of nearby galaxies.It sometimes appears as though other galaxies surround them.The other galaxies are not really there at all.Rather they are reflections of more distant galaxies coming from behind.
Astronomers suspect this optical illusion is dark matter causing aweird distortion of light called gravitational lensing.The light from the more distant galaxies is literally bent by the curvature of space caused by stars and dark matter in its path.The more dark matter there is between Earth and the distant galaxy the more the light will be bent and the greater the force to cause a Big Chill.
The gravitational lensing is a tremendous tool for the astronomer because we can measure the distortion in background galaxies and use it to trace the distribution of dark matter on various scales.We're looking at a you're wearing them.And you can tell how much that bending is occurring, you can map the dark matter and you can also see well if there's dark matter there is the universe around that dark matter behaving the way it should given the gravity or not?
Identifying which energy force dominates dark matter or dark energy will give scientists more confidence about whether a Big Chill or Big Rip will be our fate.The best evidence shows dark energy as the driving force.But by how much?Solving this mystery depends on astronomers finding ways to measure how fast the universe is moving.On Earth it's simple to determine how fast something moves.An airplane for example is relatively close.We can look at it and calculate its speed by estimating the distance it travels and timing how long it takes to get from one point to another.But the star's light can travel for millions or billions of years before it can be seen on earth.By the time its light gets here, the star will be long gone.And it's too far away to gauge its speed or distance traveled with any certainty.
The universe is expanding.Only scientists cannot give precise answers about how fast.The mystery moves closer to being solved by imaging the cosmos with greater precision.You couldn't even observe the galaxies that are in this image before Hubble Space Telescope was launched.So the increase in our capability with technology recently has been astounding.It has enabled us to do things to chart the evolution of the universe in a way that we never could have imagined.
Clearer images from space make it easier to estimate the rate of expansion.If the universe continues to expand with time, then ultimately all of the energy sources. the nuclear furnaces and stars would run out and die and the universe would actually get very cold.And there would be somthing called the Big Chill.
In the Big Chill Scenario.Earth could become a lonely cold planet as the universe expands.Distances between stars grow so vast that they nearly disappear from view.Over time they burn out.And eventually the entire universe ends in a frozen state.These are ideas that sprang from the work of Einstein and Hubble.Only neither of them lived long enough to see these results.
Imagine what Edwind Hubble and Albert Einstein would think if they were alive today watching the progress in th subject.You know Einstein thinking about the expanding universe as a natural solution to his equations but puzzles that the universe didn't appear to be changing.Edwind Hubble desperate to measure whether the universe was slowing down in its expansion.In fact they were both wrong.It's speeding up.
The time that Einstein developed the general theory we didn't know that there were other galaxies outside of our own Milky Way galaxy.And we didn't know that the universe was expanding.And in fact Einstein himself, despite the fact that his equations were screaming at him that the universe had to be evolving, didn't have enough confidence in that result to say the universe must be expanding or the universe must be contracting.
Still his work led to the scientific breakthroughs that would identify dark matter and dark energy. the forces that could cause a Big Chil.This sphere demonstrates the principles behind a Big Chill.The mables coming out of this sphere are like stars that were formed following the Big Bang.Dark energy propels the stars outward.Dark matter slows them down.In a Big Chill the expansion would continue but the nuclear fuel that cause the stars to burn will eventually run out.From Earth's perspective the first thing to go would be sunlight.The sun dims as it exhausts its last bits of nuclear fuel.
Earth would freeze and become lifeless and billions of years after humans are gone, the cosmos expands out of view.A few newer stars might remain but most would have long moved away.The furnace powering the universe burns out.The darkened universe continues to expand.A frozen and lifeless remnant of its once vibrant existence.
Eventually if this keeps going if nothing changes in the composition of this energy density, the universe will continue to expand forever.It's going to get colder and colder and eventually even the gala our neighboring galaxies will be receding from us so fast that they won't be able to see them.So the universe is going to get cold and dark and it will be a very lonely place.
Death of the universe?(1)
Death of the universe?(2)
Death of the universe?(3)
Death of the universe?(4)
Death of the universe?(5)
Death of the universe?(7 end)
Hubble sees more than just stars and galaxies.It just might be on to one of the key ingredient of space.An invisible ingredient that could put the brakes on dark energy's effect and cause a Big Chill.That's dark matter.Scientists talk about dark matter as the substance that holds the universe together and could prevent a Big Rip.Evidence that dark matter exists is seen in some of Hubble's images of nearby galaxies.It sometimes appears as though other galaxies surround them.The other galaxies are not really there at all.Rather they are reflections of more distant galaxies coming from behind.
Astronomers suspect this optical illusion is dark matter causing aweird distortion of light called gravitational lensing.The light from the more distant galaxies is literally bent by the curvature of space caused by stars and dark matter in its path.The more dark matter there is between Earth and the distant galaxy the more the light will be bent and the greater the force to cause a Big Chill.
The gravitational lensing is a tremendous tool for the astronomer because we can measure the distortion in background galaxies and use it to trace the distribution of dark matter on various scales.We're looking at a you're wearing them.And you can tell how much that bending is occurring, you can map the dark matter and you can also see well if there's dark matter there is the universe around that dark matter behaving the way it should given the gravity or not?
Identifying which energy force dominates dark matter or dark energy will give scientists more confidence about whether a Big Chill or Big Rip will be our fate.The best evidence shows dark energy as the driving force.But by how much?Solving this mystery depends on astronomers finding ways to measure how fast the universe is moving.On Earth it's simple to determine how fast something moves.An airplane for example is relatively close.We can look at it and calculate its speed by estimating the distance it travels and timing how long it takes to get from one point to another.But the star's light can travel for millions or billions of years before it can be seen on earth.By the time its light gets here, the star will be long gone.And it's too far away to gauge its speed or distance traveled with any certainty.
The universe is expanding.Only scientists cannot give precise answers about how fast.The mystery moves closer to being solved by imaging the cosmos with greater precision.You couldn't even observe the galaxies that are in this image before Hubble Space Telescope was launched.So the increase in our capability with technology recently has been astounding.It has enabled us to do things to chart the evolution of the universe in a way that we never could have imagined.
Clearer images from space make it easier to estimate the rate of expansion.If the universe continues to expand with time, then ultimately all of the energy sources. the nuclear furnaces and stars would run out and die and the universe would actually get very cold.And there would be somthing called the Big Chill.
In the Big Chill Scenario.Earth could become a lonely cold planet as the universe expands.Distances between stars grow so vast that they nearly disappear from view.Over time they burn out.And eventually the entire universe ends in a frozen state.These are ideas that sprang from the work of Einstein and Hubble.Only neither of them lived long enough to see these results.
Imagine what Edwind Hubble and Albert Einstein would think if they were alive today watching the progress in th subject.You know Einstein thinking about the expanding universe as a natural solution to his equations but puzzles that the universe didn't appear to be changing.Edwind Hubble desperate to measure whether the universe was slowing down in its expansion.In fact they were both wrong.It's speeding up.
The time that Einstein developed the general theory we didn't know that there were other galaxies outside of our own Milky Way galaxy.And we didn't know that the universe was expanding.And in fact Einstein himself, despite the fact that his equations were screaming at him that the universe had to be evolving, didn't have enough confidence in that result to say the universe must be expanding or the universe must be contracting.
Still his work led to the scientific breakthroughs that would identify dark matter and dark energy. the forces that could cause a Big Chil.This sphere demonstrates the principles behind a Big Chill.The mables coming out of this sphere are like stars that were formed following the Big Bang.Dark energy propels the stars outward.Dark matter slows them down.In a Big Chill the expansion would continue but the nuclear fuel that cause the stars to burn will eventually run out.From Earth's perspective the first thing to go would be sunlight.The sun dims as it exhausts its last bits of nuclear fuel.
Earth would freeze and become lifeless and billions of years after humans are gone, the cosmos expands out of view.A few newer stars might remain but most would have long moved away.The furnace powering the universe burns out.The darkened universe continues to expand.A frozen and lifeless remnant of its once vibrant existence.
Eventually if this keeps going if nothing changes in the composition of this energy density, the universe will continue to expand forever.It's going to get colder and colder and eventually even the gala our neighboring galaxies will be receding from us so fast that they won't be able to see them.So the universe is going to get cold and dark and it will be a very lonely place.
Death of the universe?(1)
Death of the universe?(2)
Death of the universe?(3)
Death of the universe?(4)
Death of the universe?(5)
Death of the universe?(7 end)
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