Universe Components

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Universe Components
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PLEASE LABEL THE FOLLOWING ON YOUR NOTES

• STARS
• GALAXIES
• COMETS
• ASTERIODS

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• STARS

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Astronomer

• Person who studies stars and constellations in
  the sky!

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• Blue stars (flames) burn the hottest and have a
  high surface temperature.

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• Red stars (flames) burn the coolest.

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Question Which star is hotter, Betelgeuse or
Rigel?

• Betelgeuse
  Rigel

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In a Supernova Explosion a star collapses and
throws out layers in space.
After a Supernova
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Black Holes

• BLACK HOLES can be produced after the death of
  star.
• Its so massive that
• light can not escape!

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• Nebulas are giant clouds of gas and dust.
• Here stars are born
• And can also die.

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Life Cycle of a STAR
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Absorption Spectrum

• Astronomers use this to determine both the
  temperature and composition of stars.

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• Galaxies

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• Spiral Galaxy

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• A spiral galaxy has a bulge in the center and
  spiral arms coming out of it.

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Spiral Galaxy
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QUESTION What Galaxy do we live in?

• We live in the milky way, a spiral galaxy!

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• Irregular Galaxy

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• An irregular galaxy has a scattered look to it
  with no distinct pattern.

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Irregular Galaxy
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• Elliptical Galaxy

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• An elliptical galaxy has a very bright center
  and very little dust or gas around it.

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Elliptical Galaxy
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UNIVERSE (rising bread dough example)

• The universe is like the rising bread dough, its
  expanding. The raisins are galaxies. As the
  universe expands the galaxies move far apart.

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• COMETS

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COMET

• The ion tail contains electrically charged
  particles of gas.

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• ASTEROIDS

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ASTEROID

• A ROCKY SMALL OBJECT THAT ORBITS THE SUN.

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ASTEROID BELT

• A BAND BETWEEN THE ORBITS OF MARS AND JUPITER.

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Black hole animation

• http//hubblesite.org/explore_astronomy/black_hole
  s/