Mystery of Black Holes in Space
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.
0 Response to "Mystery of Black Holes in Space"
Posting Komentar