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Today:

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Title: Slide 1 Author: Philip Petersen Last modified by: Phil Petersen Created Date: 1/23/2005 5:46:00 PM Document presentation format: On-screen Show (4:3) – PowerPoint PPT presentation

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Title: 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
5
13.5 billion years ago First Light
First stars ignite
6
13.5 - 1 billion years --Quasars very
active galactic cores
7
12 - 13.5 billion years ago Birth of the
Milky Way galaxy
8
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
10
3.5 billion years large asteroidal impact
destroyed any life
11
3 billion years earliest record of life
Australian bacterial fossils
12
67 million years extinction of dinosaurs
by asteroid colliding with earth
13
7 million years ago --hominid in Africa
14
120,000 years ago --our ancestors, the
Cro-magnons
15
  • 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.
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