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Description of Star Characteristics

Here is what I would like some comments on:

brief overview of the nature and importance of light and other electromagnetic waves.

How stars fit in the hierarchy of the universe

characteristics of stars

Processes by which stars live and die

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.

Need to 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.

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Stars seems to be very small because of its large distance from us. Star has many different stages in its life cycle.
In the spaces between stars, there exists a large amount of gas and dust. In course of time, these clouds of gas and dust
compressed under their own internal gravitational fields. The temperature of these clouds of gas and dust increases and the nuclear
reaction occurred when it reaches the enough temperature for this reaction. Thus the new stars are born from these clouds
and dust.

The gravitational attraction towards the centre of the star due to its mass is balanced by the outward pressure due
to the heat generated by the nuclear reaction. Thus the stable configuration is formed. The nuclear energy of the star is due
to the conversion of hydrogen into helium.

There are three different ways that a star ends its nuclear fuels.If the star is more massive than the Sun, it goes another
phase of reaction by converting helium into elements of higher atomic numbers. If the star is massive as the Sun, ...

Solution Summary

The expert provides a brief overview of the nature and importance of light and other electromagnetic waves.