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Understanding Our Sun: The Heart of the Solar System

Our Sun is a medium-sized, main sequence star, approximately 4.5 billion years old. It is located on the outskirts of the Milky Way Galaxy and serves as the most massive object in the solar system, maintaining the orbits of all planets through its gravitational pull. The Sun fuses hydrogen into helium in its core, a process vital for sustaining life on Earth and a key characteristic of main sequence stars.

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Understanding Our Sun: The Heart of the Solar System

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  1. The Sun (CN p. 17, Date) I know that our sun is a star, its relative size, age, and position

  2. ______ _____? ______ _____? ______ _____? • Medium-sized and medium aged (4.5 billion out of about 10 billion years) main sequence star • Sun has a core, where fusion happens • Sun fuses Hydrogen to Helium • Biggest and most massive object in the solar system, keeps all the planets in orbit • Located on the rim of the Milky Way Galaxy (far from the center)

  3. Life Cycle of a Main Sequence Star (like the Sun)

  4. (p. 16, ½ page) Diagram of the Sun • (Copy Figure 4, p. 475 from book, with labels)

  5. (p. 16, ½ page)Fusion(what stars do) versus Fission (what happens in a nuclear reactor or bomb)

  6. Summary: (write 3 sentences, use and highlight sun, location, mass, orbit)

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