After approximately 10 billion years after the star is considered to be a main sequence star, the hydrogen at the center of the core is depleted. This causes the nuclear fusion which had been previously fueling the star to die out. Helium replaces the hydrogen in the core, and the inner core begins to shrink due to gravity. This process speeds up once all the hydrogen is completely used up. The radius of the star has increased
Soon after the big bang the cosmic dust as well as gases combined and cooled off together to form stars. The nuclear fusion in stars converts hydrogen into helium and is a continuous process in the stars until hydrogen runs out at the core of the star. When hydrogen runs out, helium atoms fuse to form carbon atoms. Massive stars can synthesize heavier elements such as
The life cycle of the star is a long process that has taken place for billions of years and will continue to take place long after our star is no longer in existence. In this essay I will be explaining the magnificent process of how a star is first born till the end of its life cycle. First, I will be explaining how the star is first formed in all its beauty big or small. Then, I will be explaining the path of an average star like our own sun will take. After, I will be explaining the journey of a massive star in all its glory till its destructive end. All stars are first formed in clouds of gas called nebulae, turbulence deep within the nebulae causes cores to form as the mass begins to grow the nebulae begins to collapse upon itself due to
LIFE CYCLE OF A STAR Stars are formed in nebulae, interstellar clouds of dust and gas (mostly hydrogen). These stellar nurseries are abundant in the arms of spiral galaxies.
According to Carolyn Ruth, author of “Where Do Chemical Elements Come From,” chemical elements came from the explosion of stars, also known as supernovas. In her article, Carolyn states that a newborn star is mainly composed of the first element on the periodic table, Hydrogen. Due to the high pressure within the star, a fusion process begins that fuses two protons and two neutrons together to form the second element, Helium. These fusion processes continue to form elements that weigh less than Iron. Once the star creates all elements up to Iron, the star eventually collapses and explodes. One article that agrees with Carolyn’s theory is “The Origin of the Elements and the Life of A Star”. According to this article, stars produce nuclear reactions
When a massive star depletes all of its magnesium and silicon supply, it will only have an iron ore remaining. At this point, they will not have enough energy to sustain the inner pull of gravity, and the star will collapse. During this process, electrons and protons will combine to form neutrons in the ore. When the ore is filled with neutrons, a rebound will occur, and everything will explode outwards, during which the neutrons will surround the iron atoms and will separate into protons and electrons. Now, the iron atom has excess of protons and electrons, which means that it is a different and heavier element, as the number of protons have increased. Heavier elements like gold get made during this process, when iron atoms gain
4. How are planetary nebulae different from other types of bright nebulae? - They are remnants of dying sun-like stars and resembled giant planets. 24.4 1. What element is the fuel for main-sequence stars? - Hydrogen is the main element to fuel a main-sequence. 2. Describe how main-sequence stars become giants. - The gravitational force become off balance and then when they become balance its bigger in size.
The life cycle of a star is dependent on its mass. The larger the mass, the quicker it will die out, whereas stars which are no more than half the size of our Sun can live up to hundreds of billion years. However no matter how large the star is,
Comparing red giants to the sun, they are about 1000 times larger. Compared to the sun’s temperature, a red giants temperature is about half as much. This is because the same amount of energy has to be spread out across a much more massive star causing it to be cooler than it was before. The name red giant was given to these stars because the change in temperature causes the star to shine in the redder part of the spectrum. Stars can spend anywhere between 1000 years and one billion years in the red giant phase. After a certain amount of time, the helium finally runs out and fusion stops. Since there is no more helium, gravity pushes the star inward. The stars outer atmosphere is then blown out into huge clouds of gas and dust which is known as planetary nebulae. These clouds of gas and dust are then made to make new stars. As for the core of the star, it is still there. The star is now a white dwarf. White dwarf stars occur when the red giant loses its outer atmosphere. White dwarf stars are extremely hot because they are composed of only the core of the star which is the hottest
Stars will outlive the average human beings by about ten billion years. But stars, just like humans, go through a life cycle that adjusts to many different paths. A star is a spherical brilliant object that lies somewhere in the galaxy. The closest star to Earth is the sun. The
Way out there in space, there are huge clouds of dust and gas and if one of those clouds of dust and gas is massive enough it's own gravity can causes it to start to collapse. When it collapses, it folds itself towards the center of the cloud, then it get denser and denser and hotter and hotter; eventually the particles of that gas and the dust are made up and brought so close together that they start to stick together. Then they start to fuse, thats the energy source of a star. The star switches and begins to shine. Inside every newborn star, hydrogen atoms are fused together to make helium. This process is called fusion and it creates the energy of every star. A star is a luminous sphere of gas producing its own heat and light by nuclear reactions (nuclear fusion).
A supernova is a stellar explosion that happens in the galaxy. This can have as much energy as our Sun or any regular star. These can be seen throughout the entire galaxy, but it is hard for us to see because of the amount of dust that covers it blocks
All over our galaxy are pockets of space, filled with dust and gas. Some of these clouds are denser than others, and every once and a while, a cloud of this gas begins squeezing together due to its own gravity. This is when a star begins to form. The cloud
A star is luminous point in the night sky that is a large, 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.
"Marco," Star starts, her excitement beginning to dim as they walked on. "I 'm sorry, for this I mean." She gave a glance at the back of Marco 's head, stepping quickly to reach his side. "I never wanted this to turn out so badly." Marco gave a small sigh, pushing