Universe Components

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Universe Components

• Objective
• What are the major components of the universe?

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Astronomer

• Person who studies stars and constellations in
  the sky!

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Stars
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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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Sun

• A medium sized red star.
• Main-sequence star.

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Supernova Explosion a star collapses and
throws out layers in space. (Star Death)
After a Supernova
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Black Holes

• BLACK HOLES can be produced after the death of
  star.
• Only happens with supermassive stars.
• 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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COMET

• The ion tail contains electrically charged
  particles of gas.

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Comet

• Has an elliptical orbit around the sun.

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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/

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Review

• What color star burns the brightest?

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Review

• What type of star is the sun?
• Blue star
• Main-sequence star
• Super massive star

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Review

• Put in order from smallest to largest
• -Universe
• -Planet
• -Sun
• -Galaxy
• -Asteroid

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Review

• What type of galaxy is shown below?
• Spiral
• Elliptical
• Irregular

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Review

• What type of galaxy do we live in?
• Spirial
• Elliptical
• Irregualr