Universe: 2011

Causes of global warming

Jumat, 18 Februari 2011 21.16 Diposting oleh Fatah Razi , 0 Comments

Greenhouse effect

All energy sources that exist on Earth comes from the Sun. Most of the energy in the form of short-wave radiation, including visible light. When it reached the surface of the Earth's energy, he changed from light into heat that warms the Earth. The surface of the Earth, will absorb some heat and reflect back the rest. Some of this heat tangible long wave infrared radiation into space. However, some heat remains trapped in Earth's atmosphere due to accumulated amount of greenhouse gases include water vapor, carbon dioxide, and methane which trap the waves of this radiation. These gases absorb and reflect back the radiation waves emitted by the Earth and consequently the heat is stored in the Earth's surface. This situation occurs continuously resulting in annual average temperature of the earth continues to rise.

These gases function as a greenhouse gas. With the increasing concentration of these gases in the atmosphere, the more heat is trapped underneath.

The greenhouse effect is very much needed by all living things on earth, because without it, this planet will become very cold. With an average temperature of 15 ° C (59 ° F), the earth actually has more hot 33 ° C (59 ° F) from the original temperature, if there is no greenhouse effect the earth's temperature is only -18 ° C so that ice will cover the entire Earth's surface. However, on the contrary, if the gases have been exaggerated in the atmosphere, warming will cause global warming global.

Feedback effect

Elements of the cause of global warming is also influenced by various feedback processes that result. An example is the evaporation of water. In the case of warming due to increasing greenhouse gases like CO2, warming will initially lead to more number of water evaporates into the atmosphere. Because water vapor is itself a greenhouse gas, warming will continue and increase the amount of water vapor in the air until the achievement of an equilibrium concentration of water vapor. The greenhouse effect it produces is larger than the effect of CO2 alone. (Although this feedback to improve the absolute water content in the air, relative humidity are almost constant or even slightly decreased because the air becomes warmer). [3] This feedback would have been only slowly as CO2 has a long age in the atmosphere.

Feedback effect due to the influence of clouds is becoming the object of current research. When viewed from below, clouds will reflect infrared radiation back to the surface, so that will increase the warming effect. In contrast when viewed from above, clouds will reflect sunlight and infrared radiation to space, thereby increasing the cooling effect. Does it produce a net effect of warming or cooling depending on some specific details such as the type and height of the cloud. The details are difficult to be represented in climate models, partly because the cloud is very small compared to the distance between the boundaries of computational climate models (about 125 to 500 km for the model used in the IPCC's view to the Fourth Report). Nevertheless, cloud feedback is at number two when compared with water vapor feedback and is considered a positive (adding heating) in all models used in the IPCC's view to the Fourth Report.

Another important feedback is the loss of ability to reflect light (albedo) of ice.As global temperatures increase, ice near the poles melts at a pace that continues to increase. Along with the melting of the ice, land or water below it will open. Both land and water has the ability to reflect light much less when compared with ice, and consequently will absorb more solar radiation. This would increase the warming and causing even more ice melts, becomes a continuous cycle.

Positive feedback due to release of CO2 and CH4 from the softening of frozen soil (permafrost) are other mechanisms that contribute to warming. In addition, ice that melts will also release CH 4 that also generate positive feedback.

The ability of oceans to absorb carbon will also be reduced if he warms up, this is caused by the decline in nutrient levels in the mesopelagic zone and limit the growth of diatoms than the phytoplankton which is a carbon sink that low.

Solar Variation

There is a hypothesis which states that the variation of the Sun, with a possibility reinforced by feedback from clouds, can contribute to current warming. The difference between this mechanism with the warming due to greenhouse effect is the increased activity of the Sun would heat the stratosphere reverse the greenhouse effect will cool the stratosphere. Cooling the lower stratosphere has been observed since at least 1960, are not going to happen when the solar activity becomes the major contributor to the current warming. (Depletion of the ozone layer can also provide the cooling effect but the depletion occurred from the late 1970s.) Phenomenon Solar variation combined with volcanoes probably had given the warming effect from pre-industrial times until 1950, and the cooling effect since 1950 .

There are some research results stating that the contribution of the Sun may have been overlooked in global warming. Two scientists from Duke University estimate that the Sun may have contributed to the 45-50% increase in global average temperature over the period 1900-2000, and about 25-35% between 1980 and 2000. Stott and his colleagues argue that climate models used as guidelines when making estimates exaggerated the effects of greenhouse gases compared with the influence of the Sun, they also suggest that the cooling effects of volcanic dust and sulfate aerosols have also been underestimated. Nevertheless, they conclude that even with increased sensitivity the influence of climate on the Sun though, most of the warming that occurred in recent decades is caused by greenhouse gases.

In 2006, a team of scientists from the United States, Germany and Switzerland stated that they did not find an increase in the level of "explanation" of the Sun in a thousand years. Solar cycle to a small increase of 0.07% in brightness over the last 30 years. This effect is too small to contribute to global warming. A study by Lockwood and Fröhlich found no relation between global warming and variations of the Sun since 1985, either through the variation of solar output or variations in cosmic rays.

Global warming

21.04 Diposting oleh Fatah Razi , 0 Comments

Global warming is the increase in the average temperature of Earth's near-surface air and oceans since the mid-20th century and its projected continuation. According to the 2007 Fourth Assessment Report by the Intergovernmental Panel on Climate Change (IPCC), global surface temperature increased 0.74 ± 0.18 °C (1.33 ± 0.32 °F) during the 20th century. Most of the observed temperature increase since the middle of the 20th century has been caused by increasing concentrations of greenhouse gases, which result from human activity such as the burning of fossil fuel and deforestation.Global dimming, a result of increasing concentrations of atmospheric aerosols that block sunlight from reaching the surface, has partially countered the effects of warming induced by greenhouse gases.

Climate model projections summarized in the latest IPCC report indicate that the global surface temperature is likely to rise a further 1.1 to 6.4 °C (2.0 to 11.5 °F) during the 21st century.^[2] The uncertainty in this estimate arises from the use of models with differing sensitivity to greenhouse gas concentrations and the use of differing estimates of future greenhouse gas emissions. An increase in global temperature will cause sea levels to rise and will change the amount and pattern of precipitation, probably including expansion of subtropical deserts.Warming is expected to be strongest in the Arctic and would be associated with continuing retreat of glaciers, permafrost and sea ice. Other likely effects include changes in the frequency and intensity of extreme weather events, species extinctions, and changes in agricultural yields. Warming and related changes will vary from region to region around the globe, though the nature of these regional variations is uncertain.As a result of contemporary increases in atmospheric carbon dioxide, the oceans have become more acidic, a result that is predicted to continue.

The scientific consensus is that anthropogenic global warming is occurring. Nevertheless, political and public debate continues. The Kyoto Protocol is aimed at stabilizing greenhouse gas concentration to prevent a "dangerous anthropogenic interference".As of November 2009, 187 states had signed and ratified the protocol.

Proposed responses to climate change include mitigation to reduce emissions, adaptation to the effects of global warming, and geoengineering to remove greenhouse gases from the atmosphere or block incoming sunlight.

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The destruction of the Universe

Rabu, 16 Februari 2011 04.23 Diposting oleh Fatah Razi , 0 Comments

Every person must have often heard the theories about the creation of the universe, or even now there are people who are thinking about a new theory in this regard. But have we ever think about the theory of the destruction of the universe? Well, it's better that we never knew about this. Uh, by groping about this theory, we might be able to avoid the occurrence of the apocalypse. Well, here will be explained a little about some kind of apocalypse based on the theory of physics ... "

One theory of the universe is much truth agreed upon by scientists is the theory of Big Bang (The Big Bang). The basis of this theory is the universe expanding from a point formed by an explosion.
Then, how can possible apocalypse happen? Because continued to expand, then from the standpoint of science there are 3 possible how the universe experienced apocalypse, the "Big Crunch", "Big Chill" and "Big Rip".

Big Crunch state of the universe will continue to grow until the maximum point, then after reaching the maximum point then the universe will experience a compression or shrink and eventually go back to the point.

Big Chill states the universe will continue to grow until finally running out of stars - the stars of fuel. So the result, without stars, the planets will freeze and die. This theory is still pretty doubtful.
Meanwhile, according to the Big Rip theory, the expansion of the universe will continue to grow, expanding galaxy, gravity weakens and its contents will completely disintegrate. Stars, planets and eventually all the atoms - atoms will be broken. Time and dimensions will stop. This theory is quite believed the truth would happen, because it refers to the Big Bang theory as the theory of the universe, the universe happens because of an explosion and will end by an explosion as well.

Doomsday Repeatedly Happened

One theory is the sun that causes the apocalypse that continues to grow and eventually "eat" the planet, the term more commonly known as "Red Giant". Sun is classified as one of the star will run out of fuel and continue to grow until explodes (supernova). Supernova will produce cosmic dust that is the origin of new stars and planets. This cycle occurs several times and became the basic idea that the apocalypse could happen again and again.
Several times in recent years, many scientists in America and Europe do research on the phenomenon of a supernova. Including conducting research into a White Dwarf, the former Red Giant who did not explode. Objects are named and known as the Sirius-B whose mass is 300 thousand times the mass of Earth. Keep in mind one tablespoon White Dwarf equivalent to 5 tons.

First Apocalypse Happened On Earth

Almost all religions believe in the apocalypse. Doomsday is a necessity for many religious believers (whatever), although it is very likely mean the human race will extinct.
Doomsday scenario by science first occurred on Earth. Earth consists of layers. Deepest layer is the core of solid and liquid forms. The next layer is a mantle composed of silicates, silicone and water mixture.
The coat is a layer of earth was a hot place. Heat is rotating in the mantle and crust can move (the crust), so there was an earthquake. Doomsday occurs on Earth when the existing gravity system becomes confused by the flow of geothermal energy in the mantle layer. That's when the movement of tectonic plates appear characterized by the earthquake. When an earthquake happens, people will be very difficult to walk, this is due at the time of the earthquake is actually gravity is no longer uniform in the earthquake area. While in normal conditions, the gravity of the condition of uniform on every surface of the earth.

The movement of tectonic plates, it will continue to evolve alias continues. Scientific facts show on earth before there was only one big continent before finally broken - broken into today. Effect of gravitational force is indeed very large, so if there was an earthquake with incredible scale, then the resulting effect would be enormous as well. With earth doomsday scenario like that even mountains can tercungkil or in other words, lifted and inverted.
Regarding the exact time when the apocalypse happens only God knows. It's just that God has also been ordered and opened the door as wide as possible for humans to learn and find out about the mysteries of the universe.

Second Apocalypse Occurred Solar System

After the apocalypse on Earth, the next scenario which is described in physics is the end of the solar system. This happens because the size of the Sun's growing "eat" nearby planets such as Mercury, Venus and Earth. This phenomenon is referred to earlier as a Red Giant. And the process is not long, maybe about 3 minutes.
The sun is a star in the family tergolng to swell when the fuel, namely hydrogen is exhausted. The fuel needed to make nuclear fusion reactions that produce light and heavy atoms. And Hydrogen is limited on the surface of the sun. When hydrogen is exhausted, the sun's core continues to shrink and become smaller and more massive forms.

While the outer portion of the sun which is more loose will continue to grow to become Red Giant. When the development reached its maximum, the sun will explode and there were events known as supernova. Part - the part is wasted to form the dust - cosmic dust, the precursor of new stars and planets.
Dust - cosmic dust will be gathered together and form a giant molecular cloud. Giant cloud rotates so that its central section to form a ball (Nebula). An increasingly rapid turnover would result in more solid central part and the outside was thrown. The inside is what will form the stars and the outer planets will form a cluster.

Well, what now are you imagine? Of course you will realize one thing, the apocalypse is actually no different from the creation, because it will bring the creation of doomsday. In the aftermath of the destruction it will be born a new system, such things as when the sun had just run out of fuel and then exploded and collapsed into the solar system after system that will form new stars and planets, looks like a cycle.
After all this is still a secret of nature, can occur at any time without being able to predict. Before that happens, we, the inhabitants of planet Earth, should develop science and technology continue until we are able to uncover the veil that covers the nature of ours.

ufo phenomenon

Selasa, 15 Februari 2011 05.05 Diposting oleh Fatah Razi , 0 Comments

Are UFO's?
UFO stands for Unidentified Flying Object, which means unidentified flying objects. UFOs do not have to be a spaceship, but it includes everything in sight in the sky and unexplained. In Indonesia, the UFO is generally referred to as "flying saucer". But not all forms of UFO is a plate, so that the term is then less extensive in describing the UFO phenomenon. In the 1960s, J. Salatun use the term BETA is an abbreviation of the Weird Flying Objects. That's why the organization was called BETA-UFO.

Do UFOs exist?
UFOs are phenomena exist. From a number of eyewitness reports claiming to have seen UFOs, indeed most of them can be explained as a natural phenomenon or man-made objects only. But there are a number of UFO cases that remain unexplained or identified although has gone through a very serious investigation.

Where did the origin of UFOs?
There has been no agreement or certainty about the origin of UFOs. There are several hypotheses to answer these questions, namely:

1. From outer space - Extraterrestrial Hypothesis (ETH)
2. From the future - Time Travel Hypothesis (TTH)
3. From the earth - Terrestrial Hypothesis (TH)
4. From another dimension - Ultraterrestrial Hypothesis (Uth)

Are UFOs the same as flying saucers?
If interpreted as a plane flying saucers from outer space, then it is the same with UFO. But many of the less agree with the term flying saucer because not all UFO shaped like a plate.

What are the forms of UFOs?
Comparison of the existing reports indicate that UFOs have a shape diverse forms and colors. UFO generally reflect sunlight so sparkling, but generally reported UFO abuabu or black color. There is also a bright yellow, white or other colors. Of the various forms that exist, can be classified as five main types, namely:

1. Plate type or types of disc, such as two plates are generally flat on your stomach each other.
2. Dome type (hemispherius), such as discs with a dome at its center, can also resemble an umbrella or a mushroom without a stalk-like.
3. Cigar or cylinder type, having a shape are like silnder with a truncated tip.
4. Types of round or circular, spherical, sometimes like a ball of fire moving. This type includes the type of the most unique because of the small ukurannyaada once.
5. Type field, generally shaped like a flying wing or delta shape.

How big is the size of the UFO?
In addition to its wide range, the size of the UFO was also varied. There are both small and large. Classified as follows:

1. Size very small: about 20 cm
2. Small size: about 5 meters.
3. Size rather small: about 10 meters.
4. Medium size, about 20 meters.
5. The size is quite large, about 30-50 meters.
6. Large size, more than 50 meters.
7. Size very large, generally a parent aircraft UFOs.

Who first coined the term UFO?
Before the term commonly used UFO, the United States Air Force (USAF) uses the term Unidentified Aerial Phenomenon (UAP). The term UFO (Unidentified Flying Object) was proposed by Captain Edward J. Ruppelt, director of Project Bluebook in 1952. At that time the U.S. military, especially the USAF, shortened by UFOB. The term was later replaced the term UFO flying saucer (Flying Saucer) is more popular before.

Starting when the term became popular flying saucer?
The use of this term popular since 1947, especially when the media in covering the American experience of the pilot Kenneth Arnold. But their use of the word plate (Saucer) has never existed in 1878, when a Texas farmer named John Martin saw a strange object. Actually John Martin did not say that its form had seen strange flying objects like plates, but said that the registration plates look like. Similarly, Kenneth Arnold, also did not say that the shape of the mysterious flying objects such as plates, he even called it more like a crescent moon, but his movements like a plate was thrown on the water.

Are UFOs also across Indonesia?
Yes, many eyewitnesses reported seeing a UFO, even the creatures that come down from the UFO. The spectacular case occurred in 1959 on the islands of Alor and UFOs have also fired upon by the air defense cannon in the area of Surabaya. Many UFO sightings documented by LAPAN (Institute of Aviation and Space Agency) at the time of J. Salatun became its chairman.

What is the purpose UFOs came to earth?
Their purpose is not known with certainty. Several cases of human abduction by aliens and cattle mutilations, an indication they are studying biology and genetic engineering, including interbreeding (hybrid). On the other hand there are also cases of UFO contact with human beings who are friends and carry specific messages and oversee the development of human technology. Some cases also show the existence of UFO attack that injured man of the earth so that there is speculation that they intended to invade the earth. There are also opinions that say that they only travelers who see the situation on planet earth.

There are aliens any kind?
Information about the types of aliens who had met with the man quite a lot. However, there are four main types of common, namely: Greys, reptilian, Nordics and Hybrid. Common characteristics of the aliens mentioned above are as follows:

* Greys: He was small with grayish colored skin. Is his trademark black-eyed big. This species is reportedly often perform abduction (alien abduction).
* Reptoid: His body was scaly, for humans or larger, with mouth that more lebardari human mouth. Reportedly, there are some among them who have wings.
* Nordic: The alien species is most similar to humans, only slightly larger shape slightly, with blond hair, athletic body, blue eyes and in communication often heard with access Nordic (Scandinavian).
* Hybrid: This group is genetically modified (hybrid) between aliens with humans. The shape is not perfect like humans, sometimes in the form like a child, hair and head slightly larger when compared with normal human head.

What are the types of UFO sightings?

Classification of UFO sightings are as follows:

1. Encounter distance: Seeing UFO from a great distance, so the UFO looks just like a tiny dot just like the stars in the sky. However, because the movement revealed a strange and unusual phenomena, then the flying objects included the category of UFOs. Encounter distance was divided into 3 types namely:
* Nocturnal lights (NN): It seems like the point of light in the sky, usually colored red, blue, orange or white, with patterns of motion and speed are difficult to explain as most other light objects
* Daylight Discs (DD): It appears in the daytime, generally oval-shaped (oval), the form of plates, or made from metallic objects. Can seem distant in space or near the ground and often appear to float. Sometimes suddenly can disappear with remarkable speed.
* Radar-Visual cases (RV): Cases are rarely reported, which appeared on the radar screen in the form of flashing dots that can not be explained as the object plane or other object known. Usually must be accompanied by conformation through eyewitness sightings.
2. Close encounter of the first level: Seeing the UFO was flying in a relatively close distance so it is quite clear to see its shape.
3. Close encounter of the second level: Seeing a UFO is in a position to land on the soil surface, generally supported by landing traces.
4. Close encounter of the third level: Seeing UFO landed and seen too ufonaut (aliens) who are down or out of their plane.
5. Close encounter of the fourth level: Experiencing an encounter with aliens, but as victims of abduction (alien abduction).
6. Close encounter of the fifth level: To communicate with aliens and the aliens come together voluntarily with their planes.

Is there really a UFO that crashed?
Many cases are reported on a UFO crash into the earth and creatures found in it, there are in a state already dead and some are still alive. One of the UFO cases fell the most controversial is that crashed in Roswell, New Mexico, USA.

Is there a UFO base?
When they did come from a place very far away, it is estimated they will build a UFO base. Here are some thoughts about UFO bases:

1. At the bottom of the sea.
2. In the cavities of the earth (mountains).
3. In the polar regions north / south.
4. In space with the space station or aircraft carrier.
5. On the moon or other planets.

What should I do if I see a UFO?

1. If someone else, yell. This will attract the attention of others around you and then show it to them UFOs. This makes you get feedback on things that you witnessed and the testimony of more than one have more value.
2. If there is a camera, try to take some pictures. A good photo is having detailed background and a good front and try not only the sky background. This will facilitate the researchers to estimate the size of these UFOs.
3. Record what you see immediately, place and time to see and make a sketch of the UFO and also describes the movement or direction of flight. Try to note as well the identity of other witnesses who took part witnessed the UFO.
4. If a UFO landed on the ground though for a moment, try to prevent others to damage the former landing this. If there is a camera, create photo area and a former landing.
5. Do not approach the UFO which landed, because it feared any radiation that could be dangerous.
6. Report sightings as soon as possible. This will help the UFO investigator to interview witnesses with memories still fresh. If the sightings occurred in Indonesia, report to BETA-UFO.

Mystery Lorong Time

Sabtu, 12 Februari 2011 01.22 Diposting oleh Fatah Razi , 0 Comments

The mystery of the events that happened a few years ago, and who make an uproar is the reappearance of luck Ship Titanic victims are still alive.

Two of the victims of the Titanic disaster in 1912, suddenly appears in a state still alive. Physically, they do not change just like the original. The theory of tunnel time have been answered.
In between the two victims who are lucky, that one was a female passenger who was found in 1990, and another is a captain who discovered the Titanic in 1991.

Captain Smith's ship was found on August 9, 1991, a year after the lucky discovery of a victim named Wenny Kathe, she was rescued from the top of the iceberg. Over the decades drifting floating over the ocean, but did not make him look old and weak, Captain Smith that despite the 139 year old, but still looks like a man who was 60 years old and older, and even he still considers that it is times about the sinking of the Titanic on April 15, 1912.

Through a fingerprint identification that is still contained in the records of sea voyage, then surely the identity of Captain Smith.

Another victim of the Titanic disaster, Wenny Kathe rescued 29-year-old on a North Atlantic iceberg on September 24, 1990.

But what surprised people is since she disappeared in 1912 until now, no visible signs of old complaints.

He was found and rescued on an iceberg 363 km southwest of Iceland. Shipping office has found the Titanic passenger list and confirm the authenticity of her identity.

Smith, captain of the Titanic and its passengers Wenny Kathe is a living witness to a missing person who comes back through time path trajectory.

Therefore, they disappeared and reappeared mysteriously, then this very interesting crowd.

American Scientist Ado Snandick opinion, the human eye can not see the existence of an object in another room, that's the objectivity of the existence of the hall.

In history, people, ships, aircraft and many others who disappeared under mysterious circumstances as we often hear in the waters of the Bermuda Triangle, is really into this mysterious passage of time.

In investigations into the hall, John Buckally The hypothesis put forward the theory as follows.

First, the objective existence of nature kematerialan time path is not visible, can not be touched, closed to the world of mortal human life, but not absolute, because sometimes he will open it.

Second, the passage of time with the human world is not a system of time, after entering the set system time, there is the possibility of returning to the very distant past, or into the future, because in the passage of time, time can be either unidirectional or counterclockwise direction, can move can also be turned straight, and even froze.

Third, to the mortal world (physical space) on earth, if you entered the hall, then mysteriously disappeared, and if out of the alley at that time, it will mean is mysteriously reappear.

Due to time path, and the earth is not a time system, and because time can still frozen, so although it has been missing for 3 years, 5 years, even 30 or 50 years, the time is the same as with one or half a day.

In Buddhism there is a temple of the narrative: "Like a day in heaven, but it was already thousands of years on earth, seems to have a very deep meaning of truth.

Egyptian flare

01.18 Diposting oleh Fatah Razi , 0 Comments

Egypt demo today was heavily aired many world TV stations. Latest news egypt Riots continue to be updated and informed throughout the world. Demo in egypt egypt is broken because society is not satisfied with the leadership of their president mubarak hosin. Muhamed elbaradai spearheaded opposition figures, millions of people who thronged cornucopia of anti mubarak Tahrir Square. They are demanding the president to immediately resign. Mass pro-government in backing the police were trying to expel protesters from Tahrir Square, no doubt Egyptian riot broke out. The two sides fighting each other throwing and shooting each other, Demo Latest News Egypt afloat show has dozens of deaths, and who were injured or even hundreds.

Large-scale demo is still going on, it seems Demo Egypt would not be retroactive if President Hosni Mubarak did not immediately go down. According to the Latest News and Video Demos Egypt Egypt circulating current, today is the culmination of this demo egypt. Security was already taken by the Egyptian military, because the police who initially sided with plunge even ikut2an propemerintah stronghold. Update to the latest demo of Egypt also reported that the Egyptian national museum yesterday on fire due to the demo, historic objects were many who looted. And today reported that the atmosphere somewhat subsided, but most likely will happen peak pda demonstration today. To obtain the latest news egypt demo you can go to english.aljazeera.net.

Mystery of Black Holes in Space

01.02 Diposting oleh Fatah Razi , 0 Comments

Black hole is a concentration of mass great enough to produce a very large gravitational force. A very large gravitational force is preventing any escape from it except through quantum tunneling behavior. Gravitational field so strong that 8kecepatan off nearby near the speed of light. There is nothing, including electromagnetic radiation that can escape the gravity, even light can only enter but can not get out or past it, here derived from the word "black". The term "black hole" has been widespread, although he was not pointing to a hole in the usual sense, but it is a region in space where all can not be returned. Theoretically, black holes can have any size, from microscopic to the size of the observable universe.

Even the light particles are not able to escape the gravitational pull of black holes are super terrible. The mystery that surrounds the black hole phenomenon, however, can only be studied from afar, because of the ability of science and technology, man is still not able to bring them over to the hole.

Black hole theory proposed over two hundred years ago. In 1783, Western scientists, John Mitchell sparked theories about the possibility of his form a black hole after he was researching and reviewing the theory of gravitation Isaac Newton. He argued, if the object is thrown vertically upwards, then he will escape from the gravitational influence of Earth after reaching speeds of more than 11 kilometers per second, then of course there are planets or other stars who have greater gravity than Earth. The term 'black hole' was first used by U.S. physicist John Archibald Wheeler in 1968.

Wheeler gave the name so kerana black hole can not be seen, kerana light also attracted to it so that the area around it became dark. According to the theory of stellar evolution, black holes come from a type of blue star that has a surface temperature of more than 25,000 degrees Celsius. When burning hydrogen in a blue star which took approximately 10 million years completed, he became a giant blue star. Then, the star cools and becomes a red giant star. In that phase, due to the gravitational pull of its own, having a giant red star or a massive explosion called a supernova and produce two types of stars are neutron stars and black holes.

Observations of the X-ray telescope space for more than a decade show the strength of the gravitational pull of a black hole caused a lot of stars who destroyed and swallowed by it. Astronomy experts have succeeded in observing how the black holes suck the floating gas in the vicinity. The gas was sucked into heat so that the emitted radiation in various wavelengths, ranging from radio waves to X-rays. Based on the observations of experts in astronomy from the Max Planck Institute for Extraterrestrial Physics, Germany, had witnessed a star near the giant black hole and eventually disappear. Giant black hole that had witnessed is located in the center of galaxy RX J1242-11, a distance of 700 million light years from Earth. The star has a size of the Sun of our solar system.

The star is destroyed bit by bit and pulled into the hole for a few days. In the early stages, he lost the gases around it. After that, the star becomes hotter millions Darajat Celsius and finally disappeared into a black hole. In the process, it releases a powerful energy that is equivalent to the energy produced in supernova explosions. Astronomers can estimate the position of the black hole by means of taking light or gas around the star in the sky. If somewhere in outer space does not exist in the surrounding light but there are a lot of space objects converge at high speed before it finally disappears, then that point is nothing but a black hole.

There are many black holes throughout the universe, instead there is a theory that says the Milky Way also has a black hole! So is there any possibility if later the sun and surrounding planets including the earth will be swallowed by the black hole? Currently, the astronomers to answer, no, because compared with black holes in other galaxies it, the nature of black holes in the Milky Way is said was in a state of calm.

The mystery that surrounds the black hole will continue to attract the astronomers to continue researching it, so get a satisfactory answer. While humans have not been able to explore far into space, then the answer is forfeited and the various theories without proof will continue to put forward to solve the mystery of this universe.

Origin of Black Holes

Black hole is created when an object can not withstand the power of the force of its own gravity. Many objects (including the sun and earth) will never become a black hole. The pressure of gravity on the sun and the earth is not sufficient to exceed the atomic and nuclear power within him that are against the pressure of gravity. But contrary to the object of very large mass, gravitational pressure was the one who wins.

Growth

The masses of black holes continue to grow in a way to capture all the material nearby. All material can not escape the bondage of black holes if passed too close. So the object that can not keep a safe distance from the black hole will be exploited. Unlike the current reputation it bears stating that black holes can suck everything around it, a black hole can not suck the materials that were located very far from him. he could only pull the material through very close. Example: imagine our sun become a black hole with the same mass. Darkness enveloped the earth would not exist because the light emitted from a black hole, but the earth will remain around the black hole with the same distance and speed with current and does not enter into it sucked. The danger will threaten us only if the earth is 10 miles from the black hole, where it is still far from reality that the earth is 93 million miles from the sun. The black hole also can increase its mass in a way collided with another black hole to become a black hole is greater.

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