Stellar Death

( Millis 2014) It is believed that super massive black holes exist in the cores of many large galaxies, including the Milky Way galaxy, which is our galaxy. (Swinburne University 2014). It is believed that a normal black holes were formed because of a supernova explosion of a gigantic star, meaning when huge stars collapse, so the larger the star, the larger the black hole. ( Millis 2014) . So therefore a simple idea of how a super massive black hole might have been formed would be because of a collision of super enormous star or a collision of star clusters (star clouds).

Supernovas are extremely powerful explosions of radiation. A supernova can give off as much energy as a Sun can within its whole life. A star will release most of its material when it undergoes this type of explosion. The explosion of a supernova can also help in creating new stars. There are two types of ways a Supernova can be triggered.

The stars' fuel for energy generation is the stuff they are made of --hydrogen, helium, carbon, etc. -- which they burn by converting these elements into heavier elements. Nuclear fusion occurs, which is when the nuclei of atoms fuse into nuclei of heavier atoms. The energy given off by a star through nuclear burning heatsits interior to many millions and, even in some cases to Pleiades Star Cluster hundreds of millions to billions of degrees Fahrenheit. It causes heat to flow from the interior toward the surface, where it is released out into space and makes the star shine.

It is compressed by gravitational forces and also by shock waves of pressure from supernova or the hot gas released from nearby bright stars. These forces cause the roughly-spherical globule to collapse and rotate. The process of collapse takes from between 10,000 to 1,000,000 years. A Central Core and a Protoplanetary Disk: As the collapse proceeds, the temperature and pressure within the globule increases, as the atoms are in closer proximity. Also, the globule rotates faster and faster.

After the star becomes a very small sphere, it explodes like a giant nuclear bomb and becomes a billion times as bright as our own sun. All kinds of matter and radiation are blasted into space. This matter and radiation travels through space at nearly the speed of light (186,000 miles per second) Now, if one of these supernovae were to occur within about 130 light years of Earth, some scientists feel that life on earth would be drastically affected. Since a light year is the distance light travels in one year, 130 light years is about 760,000,000,000,000 (760 quadrillion miles!). So, suppose a supernova had occurred sixty-five million years ago within 130 light years of Earth, how exactly would it cause the death of the dinosaurs?

This paper talks about the gamma-ray explosions that occur in the universe and its effect if it were to occur close to the earth’s surface. The most energetic explosions to be recorded in the universe are the gamma ray bursts. Gamma ray bursts forms a representation of the events that occur in the cosmos due to its large luminosity that has been detected to approximately z-8.3. This has offered an exciting experience in the study and research of the astrophysics in its extreme condition. The paper focuses on the study revolving around the long gamma ray burst and also the galaxies that form their hosts.

Lastly, there are things called Accretion stars. Sometimes, debris from other material around the pulsar will be pulled into orbit around it. The debris will become superheated in the intense energy of the neutron star. The material becomes hot enough to radiate x-rays in addition to the radio signals being emitted by the pulsar itself. In conclusion, quasars and pulsars are beautiful, powerful, and slightly terrifying, celestial formations.

In this state, they glow and burn hydrogen in their core, converting it into helium through nuclear fusion. The stages of a stars stellar lifecycle that follow after the main sequence star phase depend predo... ... middle of paper ... ...om collapsing from neutron degeneracy pressure it will become a neutron star. These are detectable ____ If the mass of the leftover core of a high-mass star is greater than about 3 solar masses, the neutron degeneracy pressure can’t stop gravitational collapse and there is no known physical force capable of stopping this collapse. The core consequently collapses into a black hole. As you can now see, the remnants of stellar evaluation are determined predominantly by the mass of a star right from the beginning of its stellar lifecycle.

The star starts to dye. The process of dying varies depend... ... middle of paper ... ...erse. As a result of stellar explosions our Sun system was formed, all elements in our bodies are the products on nuclear reactions in stars. Besides, shocking waves from supernova explosion can play an important role in new star formation. Conclusion Stellar evolution is the eternal process in the Universe.

Scientifically, a star is a ball of hydrogen and helium with sufficient mass that it can endure nuclear mixture at its core. A huge, shining ball of plasma, whose lustre is an outcome of thermonuclear fusion are all properties of a star. In addition, they are held together by gravity. By far the star nearest to earth is probably known by all humans as the Sun. A bright star on Orion’s top-left section named as Betelgeuse is so massive that if it was placed where the sun is, it would swallow up Earth, Mars and Jupiter!2 Furthermore, a teaspoon full of Neutron star would weigh about “112 million tonnes” .