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A star that burns hydrogen quickly would typically generate more light than a star that burns hydrogen slowly. This is because a faster-burning star, usually more massive, undergoes nuclear fusion at a higher rate, producing greater energy output and luminosity. In contrast, a slower-burning star, often less massive, has a lower rate of fusion and thus emits less light. Therefore, the rate of hydrogen consumption directly influences the star's brightness.

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1mo ago

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What would generate more light a star that burns hydrogen quickly or slowly?

A star that burns hydrogen quickly would generate more light than one that burns it slowly. This is because a faster fusion rate produces more energy in a shorter period, resulting in a higher luminosity. In contrast, a star that burns hydrogen slowly would have a lower energy output, leading to dimmer light. Therefore, the rate of hydrogen fusion directly impacts the star's brightness.


Why is the sun slowly changing from being made of hydrogen to being made of Helium?

It is because of the nuclear fusion reactions which power the Sun. They produce energy by converting hydrogen into helium. In fact it's more complicated than the question suggests, but that's the basic idea.


Will the star ever run out of fuel?

Yes, all stars run on a limited suppliy of fuel - mainly hydrogen. Some stars burn it very quickly but reach high temperatures, while other lower mass stars burn their fuel more slowly, lasting for longer, but burn at cooler temperatures.


Why do small stars last longer than big ones?

Small stars last longer than big ones because they burn their nuclear fuel more slowly and efficiently. While massive stars have higher temperatures and pressures in their cores, leading to rapid fusion of hydrogen into helium, they exhaust their fuel quickly. In contrast, smaller stars, like red dwarfs, fuse hydrogen at a much slower rate, allowing them to sustain nuclear fusion for billions of years, often outliving their larger counterparts by a significant margin.


Do stars have cores?

Yes, stars have cores where nuclear fusion reactions occur. This is where the immense pressure and temperature allow hydrogen atoms to fuse into helium, releasing energy in the form of light and heat. The core is the hottest and densest part of a star.