The Physics Of The Cloud

When stars died, chemicals other than hydrogen and helium formed, which led to the next level of complexity—Heavier Chemical Element. Most stars spent about 90% of their life over billions of years on during protons and hydrogen nuclei into helium nuclei. When they run out of fuel, the furnace at the center of the star stopped supporting the star, and gravity took over. Small stars did not have much pressure at the center. They burned hydrogen slowly over billions of years at relatively low temperatures. When they died, they would slowly fade away. However, great stars had so much mass that they can create enormous pressures and temperature, and when the giant stars ran out of hydrogen, the temperature got cranked up even higher, which led the star to collapse. The high temperature that the collapse caused was able to make helium nuclei fuse into nuclei of carbon. When a star used up its helium, it collapsed again, and the cycle started over. The star heated up and began to fuse carbon to form

Stars are the most recognized astronomical object in space and they represent the building blocks of galaxies. Stars distribute elements such as: carbon, nitrogen, and oxygen. A star develops from a cloud of hydrogen and helium, the dust clouds that are scattered throughout galaxies. An example of a dust cloud is the Orion Nebula. The gas and dust begin to collapse from its own gravitational pull. As the cloud collapses, the middle gets hotter. This is known as a prostar. A dense and hot core forms which begins to collect dust and gas. All this material may not end up as a part of the star but can become planets, asteroids, comets, or remain dust. A star about the size of our sun can up to 50 million years to mature. The smallest stars are

Stellar evolution stars exist because of gravity. The two opposing forces in a star are gravity (contracts) and thermal nuclear energy (expands). Stage 1 Birth is where gravity contracts the cloud and the temperature rises, becoming a protostar. Protostars are a hypothetical cloud of dust and atoms in space which are believed to develop into a star. Astronomers are fairly certain of their existence. Protostars are formed about a million years after a gas clump from an interstellar gas cloud has started

As this slow contraction continues, the core temperature, density, and pressure of the star continues to increase. As the star shrinks it becomes so dense that it starts to compress helium. This results in the star to swell due to the hot core and leaving a relatively cool surface. Eventually the outer layers of the star expand outwards, increasing the size of the star. As the layers continue to expand, the surface temperature continues to cool, forming a relatively large star called a red giant.

The larger a star, the shorter their lifespan is, and they explode as supernovae, blasting out powerful shockwaves that create a chain-reaction that spews throughout the galaxy. Within just a few million years, the galaxy is forming stars up to hundreds of times more than a normal galaxy would. When all of the gas available is used up in about ten million years, the galaxy calms down and the period

Gravity pulls dust and gas together until it forms a ball. After a bit of time, the temperature rises from all the gas and dust bumping into each other under the great pressure of the surrounding material reaches around 15 million degrees. This is called a protostar, and it reaches a temperature of about 10 million Kelvins. This is where nuclear fusion occurs, and a star is born.

evaporating due to the extreme radiation from the star. This is the first time something like this

According to website, “The Life Of A Star”, “The star begins to release energy, stopping it from contracting even more and causes it to shine.” Once a star starts to flicker rapidly and become even bigger than the star’s original size, the name will change from a high or low mass star to a supergiant (for high mass) and a red giant (for low mass stars). Red giants and supergiants are the result of a star running out of fuel for nuclear fusion to occur. Helium begins to build up in a star's center causing slower paces for new atoms to form, such as carbon, oxygen, and even iron. The book, “The Life And Death Of Stars” states, “But in the case of other stars, as the hydrogen fuel runs out, the star contracts and squeezes its helium. The central temperature rises until the helium atoms begin to form more complicated atoms - carbon, oxygen, and even heavier elements like iron. This information proves that stars start to form these atoms in the red giant/supergiant stage. The outer layers of these stars start to cool and become red. Red giants and supergiants are the stars that start the stage of a star dying

A star and its planets form out of a collapsing cloud of dust and gas within a larger cloud called a nebula. As gravity pulls material in the collapsing cloud closer together, the centre of the cloud gets more and more compressed and, in turn, gets hotter. This dense, hot core is the beginning of a new star.

Stars are made from an interstellar gas cloud. It was believed that in the process of forming a star, the cloud released material onto the interstellar disk in which the stars gradually accumulated it. However, because some stars seemed to have a drastic increase of brightness in a short amount of time, this idea had to be reconsidered. The stars that went through this process seemed to maintain their high luminosity for about 100 years. Astrophysicist Eduard Vorobyov suggested the idea that the material surrounding a forming star fragments off into clumps and is consumed by the star in a process that he describes as “cannibalism on astronomical scales.” Because these clumps are large, they release a large amount of energy when consumed

There are many stages in the life-cycle of a star. Stars are formed in clouds of gas and dust, also referred to as a nebulae. The lifetime of a star depends on its size; if the star is massive, perhaps like the sun, it will have a shorter life-span. A star like a dwarf star, an extremely small star, will have a longer life-span. Stars begin as protostars, then go into main sequence stars, supergiants, and last but not least, the stars will become old and turn into either a white dwarf or a black hole. You may not be able to see every star in the night sky, but don’t be fooled, space is filled with gas and dust too thin to be seen by the naked eye; this gas and dust is called interstellar medium.

A star is a sparkling bundle of gas bound by gravity into a solitary object and is fueled by atomic combination at the center. There are trillions of stars in our universe and all are distinctive and extraordinary. Their mass, color, shape makes them all distinctive but mass is the only thing that makes them unique. There are numerous phases of stars life including main sequence stars, red giants, white dwarfs, neutron stars, and dark holes. All stars additionally have a lot of varieties in each one phase of life. The life of a star starts in a cloud, an incredible gathering of gas and dust. When enough mass has aggregated into a solitary item, gravity compels the mass to crumple into the middle. Because of weight and rubbing, the center gets so hot that it starts atomic combination and a protostar is made.

Indecent bodies like the sun. Stars are made up of big exploding balls of gas, mostly hydrogen and helium. The sun is similarly a star made up of huge amounts of hydrogen, undergoing a continuous nuclear reaction like a hydrogen bomb. Stars come about when vast clouds of hydrogen, helium and dust contract and collapse due to gravity. The clouds came from astronomical plasma from “The Big Bang”, but the dust comes from the supernovae of other stars.

     There are four different types of stars: Protostars, Bright Stars, Red Giants, and White Dwarfs. Protostars are stars that are on the verge of being born. They are glowing clouds of dust and gas. Gravity pulls on every atom moving them towards the center of the cloud of dust, which causes the Protostar to collapse. Over a period of twenty million years the star begins to form and 10 million years after the pocket of gas was formed, a star is born.

Observations indicate that at present time stars born in magnetized rotating cores of molecular clouds~\citep{shu87, dudorov91, dudorov95, mckee07}. Centrifugal and electromagnetic forces lead to the formation of a disk-like structure during the gravitational collapse of the molecular cloud. Evolution of accretion disks depends on efficiency of angular momentum escape. Turbulence \citep{ss73}, magnetic braking and outflows are the most important mechanisms of angular momentum transport in accretion disks of young stars. Turbulence in accretion disks comes probably from magnetorotational instability \citep[MRI, ][]{balbus91}. Magnetic braking mechanism is based on the process of transfer of angular momentum by torsional Alfven waves