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Stars and Galaxies

Stars and Galaxies. The closest star to us. The sun. A cluster of stars . A galaxy is a cluster of stars together. The universe. The universe is everything in space. The different types of universes. Stars make up galaxies which make up the universe. The different types of galaxies.

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Stars and Galaxies

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  1. Stars and Galaxies

  2. The closest star to us • The sun

  3. A cluster of stars • A galaxy is a cluster of stars together

  4. The universe • The universe is everything in space

  5. The different types of universes

  6. Stars make up galaxies which make up the universe

  7. The different types of galaxies • Draw three boxes each with a title and a picture of the galaxy in the box Irregular Galaxy Elliptical Galaxy Spiral Galaxy

  8. What makes one star different from another? • Mass determines lifespan of star • Flame demonstration: predict on left side order from coolest to hottest. (orange, white, yellow, red, blue)

  9. The color of a star tells its surface temperature • Remember: ROYWB • A star’s color tells you how hot its surface is. From coolest to hottest: • Red, orange, yellow, white, blue

  10. Size of stars

  11. A star is born Nebulas- dust and debris collecting in space

  12. Protostar • Star is being formed from nebula dust and debris

  13. Star is formed=main sequence

  14. Dying star

  15. Super nova • Explosion moving at about 6 million mph!! OR

  16. White dwarf star  Black dwarf star

  17. A star has died

  18. Neutron Star or Black Hole? Black Hole If the star is at least 9 or more times larger than the Sun, the core will continue to collapse into a black hole, an extremely dense area with a strong gravitational pull that light can not escape. • Neutron Star • If the star is at least 1.5 but less than 9 times larger than the Sun, the core left after the supernova will collapse into a neutron star. This is a star composed only of neutrons.

  19. Types of Galaxies – Quasars… • A quasar is a distant galaxy with a black hole at its center. • As enormous amounts of gas revolve around a black hole, the gas heats up and shines brightly.

  20. See board • Diagram of Stars life

  21. Life cycle of a star (no dwarfs here)

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