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Stars are sometimes referred to as “burning” masses. Stars don’t really burn, as...

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fofa123 | Student, Grade 10 | eNotes Newbie

Posted July 3, 2012 at 12:34 AM via web

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Stars are sometimes referred to as “burning” masses. Stars don’t really burn, as a fire does. How does a star produce energy?

 

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stolperia | (Level 1) Educator Emeritus

Posted July 3, 2012 at 1:14 AM (Answer #1)

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The core of most stars is made up mostly of hydrogen, with some helium and very small amounts of other elements, all held together due to the force of gravity.

Over time, the atoms of hydrogen and other elements react to each other by fusing, a process known as thermonuclear fusion. Enormous amounts of energy is released during this process. The energy is given off as light energy (the reason why we can see stars) and as heat (the reason why stars are said to burn).

As a star's core hydrogen is used up, the star appears to change colors due to the changing composition of elements being fused and the temperature being created by the reactions.

 

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karengettystewart | Middle School Teacher | eNoter

Posted July 6, 2012 at 5:48 PM (Answer #2)

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Stars lack oxygen, so you are correct, they don't "burn" in the sense that we think of this definition. 

The Sun goes through nuclear fusion which is the result of combining hydrogen and helium from the Sun's core. This produces energy that is radiated from the core.

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astrosonu | Student | Valedictorian

Posted July 20, 2012 at 9:42 AM (Answer #3)

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Hello! A star gets its energy from the nuclear fuel which is obtained by the nuclear rections that happen in the body of the star. The nuclear fusion happens when hydrogen and helium from the star's core combines together. So, this is how the light is formed from the sun.

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astrosonuthird | Student | Valedictorian

Posted July 30, 2012 at 10:27 AM (Answer #4)

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Stars produce energy by nuclear reaction. Nuclear fusion of hydrogen and helium helps the star to produce energy.

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