Life cycle of stars essay

The star then begins to release energy which stops it from contracting, and it causes the star to shine. The protostar begins to heat up, and if it has enough matter the core temperature reaches 15 million degrees Fahrenheit.

This is because its central temperature never gets high enough to start fusing helium into carbon. At 15 million degrees Fahrenheit nuclear reactions occur in which hydrogen fuses to form helium. Stars like our Sun live for about 10 billion years.

Realizing this could be his last moments the man stays on the porch well into the night. This is the nuclear reaction in which hydrogen atoms are converted to helium atoms plus energy. High Mass Stars High mass stars end their lives spectacularly.

The two men settle into their chairs as Tom begins to explain the importance of light and electromagnetic waves. At this point, the outer layers of the star will expand to conserve energy -- the star swells, becoming brighter and cooler. They, too, go through a stage where they swell up, though they swell even more than their lower-mass counterparts.

Usually neutrons will decay into a proton and electron quickly; however, when the density of protons and electrons is high enough, it becomes less adventageous for a neutron Life cycle of stars essay decay. Color depends on surface temperature, and brightness depends on surface temperature and size.

For more of a background on stars Tom decides to explain where stars fit into the hierarchy of the universe. Get Full Essay Get access to this section to get all help you need with your essay and educational issues.

Life Cycle of a Star Essay Sample

This hydrogen burning starts from the very center of the star, and moves its way out, leaving a core of helium behind. Intermediate Mass Stars Stars with masses close to that of our Sun up to about five times the mass of our Sun will experience helium-to-carbon burning in their cores.

Outside the helium core, hydrogen will continue burning into helium. The contracting cloud heats up due to friction and forms a glowing protostar; this stage lasts for roughly 50 million years. Tom clarifies that a star is a gigantic, brilliant sphere that produces light and energy. It is compressed by gravitational forces and also by shock waves of pressure from supernova or the hot gas released from nearby bright stars.

He gazes at the stars above and begins to wonder about how the beautiful twinkling stars above came to be. If a star is massive enough, it will fuse heavier and heavier atoms -- hydrogen to heluim, heluim to carbon, carbon to This contraction causes the core of the star to collapse, taking less than one second.

Young stars emit jets of intense radiation that heat the surrounding matter to the point at which it glows brightly. A star of about 1 solar mass will remain in main sequence for about 10 billion years. The mass affects the speed stars produce energy and the energy affects the surface temperature.

Eventually, they have so many layers, that they may look like an onion -- see figure below. The distinctive traits are related to one another in an intricate way. Then we will explore where stars fit in the hierarchy of the universe.

The process of collapse takes from between 10, to 1, years. To make these associations easier to understand astronomers developed a graph called the Hertzsprung-Russell H-R diagram.

The stars are born because of the gravity of the nebula acts on itself, condensing the gas and dust into a protostar. Low Mass Stars If the star is small enough much less than the mass of our Sunit never gets beyond hydrogen burning.

A star remains in main sequence depending on its solar mass. The central core becomes the star; the protoplanetary disk may eventually coalesce into orbiting planets, asteroids, etc.

Once this occurs, the core no longer has any resistance to gravity -- the core collapses. During this core collapse, the outer layers of the star are blown off in a supernova explosion.Life Cycle of Stars Essays: OverLife Cycle of Stars Essays, Life Cycle of Stars Term Papers, Life Cycle of Stars Research Paper, Book Reports.

ESSAYS, term and research papers available for UNLIMITED access. THE LIFE CYCLE OF THE STARS The Life Cycle of the Stars SCI January 12, Abstract Stars come in many definitions and in many forms today, there are Rock Stars, Movie Stars, There is even star shaped cereal for children but the most important stars we have our in our solar system.

Life Cycle Of Stars

Life Cycle of a Star Essay Sample. Stars are born in high density areas of space called nebulas. A nebula (as defined by is: A diffuse mass of interstellar dust or gas or both, visible as luminous patches or areas of darkness depending on the way the mass absorbs or reflects incident radiation.

Most of the star's life is spent fusing hydrogen into helium. Our sun has been doing this for some five billion years, and is expected to continue doing it for another five billion or so years. This hydrogen burning starts from the very center of the star, and moves its way out, leaving a core of helium behind.5/5(1).

Read Life Cycle of Stars free essay and over 88, other research documents. Life Cycle of Stars. An elderly man stricken with terminal cancer is /5(1). 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.

Life cycle of stars essay
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