Today:

1
Today The Overall Perspective A Brief
History in Time
2
Cosmic Timeline
3
Great Movie!
Fair Book
4
13.7 billion years ago -- The Big Bang
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13.5 billion years ago First Light
First stars ignite
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13.5 - 1 billion years --Quasars very
active galactic cores
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12 - 13.5 billion years ago Birth of the
Milky Way galaxy
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10 billion yrs- Now Active Galaxies
less active cores, less numerous
than quasars.
9
4.6 billion years birth of the Solar
System and the Earth
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3.5 billion years large asteroidal impact
destroyed any life
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3 billion years earliest record of life
Australian bacterial fossils
12
67 million years extinction of dinosaurs
by asteroid colliding with earth
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7 million years ago --hominid in Africa
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120,000 years ago --our ancestors, the
Cro-magnons
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• The Future?
• Falling into Andromeda Galaxy
• Impact in about 2 billion years
• Sun becomes a Red Giant and consumes the Earth
• in about 4.5 billion years.