Stars - PowerPoint PPT Presentation

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Stars
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Stars

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Presentation Transcript

  1. Stars

  2. nebula

  3. Nebula • Massive collection of dust and gas in the universe. • Can be: • Nursery for new stars • Graveyard for dead stars • Recycling center for stars

  4. stars • Stars - massive spheres of gases. • Energy – produced by fusion of elements • Fusion – combining of one element to form a new element releasing energy in the form of the EM spectrum.

  5. Birth and Death of stars

  6. Red giant • When H is used up balance of pressure and gravity no longer exists and it expands into a larger star. • Outer atmosphere expand and cool • red

  7. White dwarfs • White dwarf in center of this planetary nebula. • Core of a dying star • Extremely dense star • Its atmosphere collapses in on itself. • Gravity pulls in the heavier material • Very hot

  8. Supergiants and super novas • Supergiant – massive star size of solar system that takes up Jupiter’s orbit. • - Fe core • - can no longer fuse new elements • - core implodes exploding violently into super nova.

  9. Neutron star • A neutron staris a type of remnant that can result from the gravitational collapse of a massive star. • Neutron stars are very hot