Where are we How old is the Universe What is the Universe made of

							       Where are we?

  How old is the Universe?

What is the Universe made of?
Science
   “Hey, Sam, the big round
yellow thing came up again.”
Stars
The Multiverse
            Where is
               the
            Universe?
spacemail
Galaxies are not random
       Where are we?

  How old is the Universe?

What is the Universe made of?
How Old is the Universe?
         The Universe
Ussher    was created
           at noon on
          October 23
           4004 BC

             4004
           + 2003
            -------
            6007
           years old
DMR 53 GHz
Age of Universe      13.7 +/- 0.4 Gyr




                  13.4 +/- 1.6 Gyr




                                     Sievers02
                                     WMAP03
                                                 Lineweaver 1999
                 Age of
         Friedmann’s Equation
            Universe:details
     H = Ho (  a +  m a )
       2      2       o       -3


Uranium 238




                  WD
                cooling
Press
Where are we?


How old is the Universe?


What is the Universe made of?
          1    2     3      4
Relative Solar Abundances
         H     O     N      C
CHON+SP
Where are we?


How old is the Universe?


What is the Universe made of?
  Any Questions?
                    “We succeeded in taking this picture from deep space...
                   you see a dot. That’s here. That’s home. That’s us. On it,
                   everyone you ever heard of, every human being who ever
                   lived, lived out their lives...every king and peasant, every
                    young couple in love, every hopeful child, every mother
                    and father... every saint and sinner in the history of our
                      species, lived there on a mote of dust, suspended in a
                                             sunbeam.




Carl Sagan Think of the rivers of blood spilled by all those generals and
(1934-1996) emperors so that in glory and triumph they could become the
                momentary masters of a fraction of a dot…Our planet is a
                 lonely speck in the great enveloping cosmic dark. In our
               obscurity -- in all this vastness--there is no hint that help will
                    come from elsewhere to save us from ourselves.”
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