Term Paper on "Stars That One Might Observe"
Term Paper 3 pages (1083 words) Sources: 1+
[EXCERPT] . . . .
Stars that one might observe with the naked eye have a life of their own. Many of the visible stars such as the sun are as old as the universe itself and their formation and lifespan gives clues to the processes of creation and destruction that have fueled the creation of the universe. Stars have a definite structure, defining characteristics, a life cycle, and a place in the universe.Everyone knows that stars emit light and are, therefore, visible to the naked eye and to astronomers who use technology to observe the photons. A casual observer might even think the stars "twinkle," but this effect is a result of Earth's air movements that change the straight path of the stars' rays. Stars are considered light-emitting or luminous bodies. Their luminosity is "the rate at which a star emits energy" and is measured in watts compared relatively with the luminosity of the sun (Green, 2005, p. 2). Another facet of visibility of stars is their color spectrum. There are six bands that make up the electromagnetic spectrum and stars are capable of emitting all six, but not all of them do. The six bands are radio waves, infrared rays, visible light, ultraviolet rays, X rays, and gamma rays (Green, 2005, p. 3). A star's color is affected by the energy produced by it and measuring the emission lines in the star's electromagnetic spectrum is one way for scientists to determine the temperature and energy of a star.
Stars have many variants such as age, size, mass, and luminosity, but one thing they have in common is that "about 75% of all stars are members of a binary system, a pair of closely spaced stars that orbit each other" (Green, 2005, p. 1). Stars are also grouped together in galaxi
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What exactly is a star? "A star is a huge, shining ball in space that produces a tremendous amount of light and other forms of energy. The sun is a star, and it supplies Earth with light and heat energy...The sun and most other stars are made of gas and hot, gaslike substance known as plasma (Green, 2005, p. 1). The characteristics that define stars fall into five categories that are all related and interdependent. These categories are brightness, color, surface temperature, size, and mass. "These characteristics are related to one another in a complex way. Color depends on surface temperature, and brightness depends on surface temperature and size. Mass affects the rate at which a star of a given size produces energy and so affects surface temperature" (Green, 2005, p. 2).
The creation of stars and their life cycle depends largely on their mass. There are three types of stars: high-mass, intermediate-mass, and low-mass. The middle group is the most widely studied and understood (and contains… READ MORE
Quoted Instructions for "Stars That One Might Observe" Assignment:
Describing the life cycle of stars. Begin with a brief overview of the nature and importance of light and other electromagnetic waves. Then explain where stars fit in the hierarchy of the universe, the characteristics of stars, and processes by which stars form, live, and die. Discuss how the materials are recycled and how this process might be related to the structure of the Milky Way Galaxy and to the origin of the universe.
Consider these facts in describing the life cycle of stars:
Stars seem unchanging, but they are not. Stars are born from the interstellar medium, become main sequence stars, use up sources of energy, and then ultimately die. During this time, the star can change dramatically. Then its ultimate fate depends on its mass.
How to Reference "Stars That One Might Observe" Term Paper in a Bibliography
“Stars That One Might Observe.” A1-TermPaper.com, 2006, https://www.a1-termpaper.com/topics/essay/stars-one-observe/63238. Accessed 28 Sep 2024.
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