Why Should We Be Interested In Stars

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

A simple star with low fuel turns into a strong, powerful black hole in space with 4 times more mass than the sun.

The life and death of a star is both interesting and complicated. The formation of a star might not be as simple as you think. Some stars actually fail to form big enough to ever be seen. You might also believe that a star will shine forever. However, stars can also lose their energy, causing them to become other types of formations. Stars can be complex anomalies that can end up in several forms including neutron stars, brown dwarfs, and white dwarfs.

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

Stars are composed of hydrogen gas and dust. Stars owe their existence to the force of gravity. Stars are created from the thinly spread atoms of dust and gas that swirl throughout space. The atoms clump together into dense clouds that eventually collapse under their own gravity. Other forces counteract the gravity. The dust and cloud grows

White dwarf is very small with diameter as the Earth and mass similar to the Sun formed when the core of red giant collapsed. The maximum mass a white dwarf can have is about 1.4 solar masses which is known as Chandrasekhar limit. A single star can be one mass at the start of life and still evolve into a white dwarf being 0.6 mass compressed into approximately the volume of the Earth. Even though it is hot, it is not as bright compared to its temperature of more than 8000° C. However, they cool down and fade over billions of years.

Stars generate energy via nuclear fusion of elements. Stars of the magnitude great enough to become type II supernovae possess the mass needed to fuse elements that have an atomic mass greater than hydrogen and helium. The energy generated by these fusion reactions is large enough that it is able to counter the force of gravity and prevent the star from collapsing, maintaining stellar equilibrium. The helium produced in the core builds

Stars are made all of the time, and this is because of gravity. Star are made when gravity squeezes interstellar gas with so much pressure that they begin fusion. After they begin this fusion, the fusion lets out a force to the outside of the star. When the gravitational force and the force made by the fusion are the same, the star is stable. If they are not the same, for any reason, the star will be unstable and explode. Stars are made all the time because of gravity, even if we can’t see them being made.

Once the helium in the core is exhausted, the star emits its outer layers into space, contracts down, and emerges as a White Dwarf. Ultimately, the White Dwarf will lose all of its energy, collapse due to gravity, and enter a Black Dwarf stage. No Black Dwarfs have been observed in our universe because the time it takes for a White Dwarf to cool completely is likely to be trillions of years. A Black Dwarf is simply an explanation for what would result following the death of a White Dwarf.

All stars are born in nebulae. Nebulae are huge cold clouds of gas and dust. The formation of protostars requires huge clouds of gas and dust collapsing under gravitational forces. The stage of a protostar last an approximate of 50 million years. As stars grow, they also expand. When the core runs out of hydrogen and helium, the contacts and outer layers of the core expand, become cold, and the brightness decreases. This is also known as a Red Giant or a Red Supergiant which mainly consists of the star’s mass. After a while of beginning the process of its death it goes through other stages.

Stars begin their life cycle as molecular clouds. Some event, such as a shockwave or collision of a galaxy, causes the cloud to collapse and form smaller pieces, which collapse inward on itself, and form a protostar. As the star collapses, gravitational energy creates heat, resulting in the rotation of the particles. During this phase of formation,

Stars a balls of gas that are luminous meaning that they give off light. Star first start transition begins from clouds, a cold molecule of hydrogen that gravitationally collapse creating fragments into many pieces that slowly form in to individual stars. Stars are then held by their own gravity and is made of 75% hydrogen and 25% helium two of the elements in the periodic table. Hydrogen has the symbol of H and is the lightest and also simplest element in the periodic. Helium had the symbol He and had the lowest boiling point compared to the other elements in the periodic table. As time eclipse stars converts elements of hydrogen to helium that is why the ratio of the sum is 70% hydrogen and 29% helium.

If a star's body has less than 0.08 of the sun's mass, they can not reach the stage of nuclear fusion at their core. They would become brown dwarfs, they never twinkle. Id the body has sufficient mass, the dust and collapsing gas burns hotter. Eventually temperatures will rise and reach sufficient to fuse Hydrogen into helium. Hydrogen fusion powers the stars like a switch and they become a main

So by definition a star is a globe of gas that produces its heat and light by nuclear fusion. They are born from a nebulae and are made up of mostly hydrogen and helium gas. Surface temperature on a star can range from 2000°C all the way up to 30,000°C (“Life of a Star.”). The colors of a star can range from blue to red depending on the brightness of the star. The brighter star is the higher the

Gravity drew dust and gas together to create the solar system. The sun formed first from the material closely by the planets. Waves of energy traveling through space pressed clouds of such particles closer together, and gravity causes them to collapse in on themselves. As the material drew together, gravity caused it to spin. The spin caused the cloud to flatten into a disk like a pancake. In the centre, the material clumped together to form a protostar that would eventually become the sun. The protostar was a ball of hydrogen and helium not yet powered by fusion. Over the course of 50 million years, the temperature and pressure of the material inside increased, jumpstarting the fusion of hydrogen that drives the sun today. (Credit, 2016)