What is the Sun?, a Star, a Planet, What is the Sun mostly made of?, Hydrogen and feier, Hydrogen and helium, Where is the Sun located?, At the center of our Solar System, At the center of our Galaxy, How old is the Sun?, 4,500,000,000, 4,500,000,000,000, What keeps the Solar System together?, The sun's gravity, The sun's system, Where produce the sun energy?, Through corona fusion, Through nuclear fusion, What will the Sun become in the future?, A white dwarf, then a red gigant, A red giant, then a white dwarf

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The Solar System
The Solar System
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The Sun and its planets
The Sun and its planets
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Life Cycle of the Sun
Life Cycle of the Sun
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What is the sun ?
What is the sun ?
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Review: Why the Sun is important?
Review: Why the Sun is important?
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About the sun
About the sun
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1.4 Earth & Why the Sun is Red
1.4 Earth & Why the Sun is Red
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What is the sun?
What is the sun?
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