Investigating the History of the Universe and the Big Bang Theory
The Big Bang theory is a theory that states that the universe originated as a single mass, which subsequently exploded. The entire universe was once all in a hot and dense ball, but about 20 million years ago, it exploded. This explosion hurled material all over the place and all mater and space was created at that point in time. The gas that was hurled out cooled and became our stellar system. A red shift is a shift towards longer wavelengths of celestial objects. An example of this is the "Doppler shift." Doppler shift is what makes a car sound lower-pitched as it moves further away. As it turns out, a special version of this everyday life effect applies to light as well. If an astronomical object is moving away from the Earth, its light will be shifted to longer (red) wavelengths. This is significant because this theory indicates the speed of recession of galaxies and the distances between galaxies.
How do stars form?
Small regions within an instellar cloud about a fraction of a light year across begin to collapse under their own gravity. As the collapse continues, the center of this core region becomes denser and denser climbing from only 100 atoms per cubic centimeter to millions of atoms per cubic centimeter and higher. As it collapses, whatever very slight rotation it originally had gets amplified so that it spins faster and faster. Although the gas falling along the axis of the collapsing cloud feels nothing more than the gravitational force of the central core, along the equator of the object, centrifugal forces due to its spinning become so strong that they strengthen the collapse along this direction. The cloud collapses into a flattened disk with ...
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...f gas, which collapsed and broke up into individual stars. The stars are packed together most tightly in the center, or nucleus. Scientists believe it is possible that at the very center there was too much matter to form an ordinary star, or that the stars which did form were so close to each other that they coalesced to form a black hole. It is argued that really massive black holes, equivalent to a hundred million stars like the Sun, could exist at the center of some galaxies
Photons always travel at the speed of light, but they lose energy when traveling out of a gravitational field and appear to be redder to an external observer. The stronger the gravitational field, the more energy the photons lose because of this gravitational red shift. The extreme case is a black hole where photons from within a certain radius lose all their energy and become invisible.
The Kerr black hole, which is the most common form, rotates because the star from which it was formed was rotating. When the rotating star collapses, the core continues to rotate, and this carried over to the black hole. The Kerr black hole...
The dense core of the star continues to remain bound together by the force of gravity and pressures
Black Holes are mostly found inside of the Milky Way. There are many types of galaxies and many different types of Black Holes. A normal galaxy has gases and stars
Stars are born and reborn from an explosion of a previous star. The particles and helium are brought together the same way the last star was born. Throughout the life of a star, it manages to avoid collapsing. The gravitational pull from the core of the star has to equal the gravitational pull of the gasses, which form a type of orbit. When this equality is broken, the star can go into several different stages. Some stars that are at least thirty times larger than our sun can form black holes and other kinds of stars.
Black holes were originally thought to have only mere mathematical concepts. There was seemingly no possible way to compress any object into a space small enough to equal to its schwarzschild radius. Later however, astronomer Subrahmanyan Chandrasekhar calculated that stars much larger than our own sun should theoretically be able to collapse into a black hole (UTFC). A star is like a blown up balloon with the force of gravity trying to compress the balloon inwards and the air trying to push the balloon outwards. Likewise, stars are held in balance by gravity trying to collapse the star inwards going against the outwards pressure of the internal reactions of the star called nuclear fusion. If the star is big enough and the pressure inside quickly disappears, gravity would and should slingshot the star into a tiny point with near infinite density with an extremely strong gravitatio...
A Lyman alpha blob is a giant cloud of gas that expands because of heat. The largest Lyman alpha blob looks like a giant green jellyfish and is located in the Aquarius constellation. This Lyman alpha blob is 200 million light years wide. It is known that the largest Lyman Alpha Blob was formed 12 billion years ago. Some scientists believe that the Lyman Alpha Blob may hold the answers to how galaxies are formed. There are at least 100 billion galaxies that exist in the universe that we can discover. Some of them are even 10 to 20 times bigger than our Milky Way. When galaxies collide with each other they become one big
As a result of all observations, scientists recognized that stars and gas behave extraordinary and create the high-energy light while rotating around the black holes and these are evidences of existence of the black holes (“What is Black Hole?”, 2008, para. 2-10). As mentioned before, black holes has infinite density, that phrase emphasizes that besides its extraordinary mass, the volume of black holes is approaching zero. Addition to that Redd (2013) compared the volumes of stars and the black holes and determined the volume of black holes are smaller than stars. Black holes are categorized according to their mass.
According to the particle theory of light, light is composed of particles called photons and each photon has some energy associated with it, which depends on the frequency of light. A photon is a bundle of electromagnetic energy or the basic unit that makes up all light. Even though it is not strictly correct, it is hard not to think of a beam of light as a collection of little "light bullets" all strung together in a row. Although this is mainly focused on Einstein’s theory, Sir Isaac Newton's prism experiments and Corpuscular theory have been used as evidence that light travels as a shower of particles or photons, each proceeding in a straight line until it
The black hole’s surface is known as the event horizon. Behind this horizon, the inward pull of gravity is overwhelming and no information about the black hole’s interior can escape to the outer universe. Applying the Einstein Field Equations to collapsing stars, Kurt Schwarzschild discovered the critical radius for a given mass at which matter would collapse into an infinitely dense state known as a singularity.
Light is a form of energy, it gives off electromagnetic energy. Light travels at 300000 km/h and can either
Our solar system, as we see it today, originally formed from the collapse of a very cold and low-density cloud of gas. The mass of this cloud was composed of 98% hydrogen and helium, 1.4% hydrogen compounds, .4% rock, and .2% metal. The nebula was thought to be a few light years across and was roughly spherical in shape. The cloud was in a state of balance, it was neither contracting or expanding, until a cataclysmic event, most likely a supernova, created a shock wave through the nebula, resulting in an area of higher mass. Once this area became more massive than the rest of the nebula it begin to collapse with the area of hig...
Red Shift The fact that red shifts appear to be quantized has interesting implications for the study of the universe. This suggests that the red shift may be caused by something other than the expansion of the universe, at least in part. This could be a loss of energy of light rays as they travel, or a decrease in the speed of light through discrete levels. Maybe there is some other explanation.
Astronomers believe that most galaxies consist of a supermassive black hole at the center, which attracts all constituents of galaxies such as, dust, gases (mainly Hydrogen and Helium), atoms, stars, interstellar clouds and planets to the center by force of gravity, but are not sure whether all galaxies contain a black hole in the center. Galaxies keep moving in relative motion to one another and intermittently can come so close that the force of gravitational attraction between the galaxies may become strong enough to cause a change in the shape of the galaxies, while in exceptional cases, the galaxies may collide. If two galaxies collide, they may pass right through without any effect or may merge, forming strands of stars, extending beyond 100,000 light years in space (World Book Online Reference Centre, 2005). Hence, neighboring and often other colliding galaxies induce the sha...
The big bang theory is an attempt to explain how the world began. The big bang theory begins with what is called a “singularity.” This term is used to describe an area in space which defies all the known laws of physics. Singularities are thought to exist at the core of black holes. Black holes are areas of intense gravitational pressure. The pressure is thought to be so intense that matter is pressed together into an infinite amount of pressure. The dense hot mass of the singularity slowly expanded. This process is called inflation. As the singularity expanded the universe went from dense and hot to cool and expansive. Inflation is still continuing on today which means that the universe is continually expanding.
Although I was not doing an article on black holes, I decided to watch the following documentary, merely because it was related to the cosmos.