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The Sun

Our star — a G-type main-sequence star that provides the energy driving all life and weather on Earth.

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💡 Analogies

The Sun is like a giant nuclear power plant in space, but instead of splitting atoms (fission), it squeezes them together (fusion) — and it's been running for 4.6 billion years.

⚠️ Common Misconceptions

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Myth: The Sun is on fire.

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Reality: The Sun doesn't burn like a campfire (combustion). It generates energy through nuclear fusion — smashing hydrogen nuclei together to form helium. This is millions of times more energetic than chemical burning.

🧪 Test Your Understanding

How does the Sun generate energy?

The Sun contains more than 99% of the solar system's total mass.

🧠 Quick Review

What type of star is the Sun?

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What is the Sun's core temperature?

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📖 Sources

institutional

The Solar System — NASA Science (2024)

textbook

Planetary Sciences — Imke de Pater, Jack Lissauer (2015)