What Is Man

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Klein Bottles
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http//www.kleinbottle.com
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In 1882, Felix Klein imagined sewing two Möebius
loops together to create a single-sided bottle
with no boundary. Its inside is its outside, so
it contains itself.
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Klein Steins?
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(No Transcript)
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Why Is This Man Smiling?
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What Is Mans Place In The Universe?
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Ancient ManThe Earth is the center of the
Universe. We know this because everything in the
sky turns around the Earth. Its obvious man!!
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Copernicus (15??)The Sun is the center of the
Universe. I know this because the orbital
calculations come out with less overall error
this way. The orbits are perfect circles.
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Kepler (16??)The Sun sits at one of the focal
points of each planets elliptical orbit. I know
this because I stole Tycho Brahes data and
theres simply less error in the calculations if
you assume elliptical orbits.
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1700s to early 1900sThe Sun is just one
ofTENS OF THOUSANDSTENS OF MILLIONSHUNDREDS
OF MILLIONSHUNDREDS OF BILLIONS of other stars
in the Universe.
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1920-ishHey, those fuzzy spiral blobs in the
sky are other galaxies! And the Milky Way is
just one galaxy out of HUNDREDS OF BILLIONS of
others!!
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Does this mean we are on an insignificant planet
orbiting an average star which is a member of an
ordinary galaxy?Is there nothing special about
us?
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Edwin Hubble (19??)Hey all those other
galaxies are running away from us! Maybe were
special after all?
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Nope it turns out that in an expanding
universe, everyone sees it as if all the other
stars are running away from them.
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1950sHey none of these galaxies seem like
they have enough visible mass to explain their
rotation speeds!
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1970sHey none of these galaxy clusters seem
to have enough visible mass to explain the
motions of the galaxies inside them!
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1980sNo problem. That just means that
theres more than meets the eye when it comes
to Astronomy. Well just call that missing
stuff dark matter, and try to look for
different kinds of it.
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1990sYknow what? Weve found lots and lots
of dark matter, but it STILL doesnt add up to
enough to explain anything. Its as if 70 to
90 of the Universes mass is hidden. Whats
this mean?
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The ultimate insultWe arent even made of the
most common type of matter in the universe.
What could be more humbling than that?
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Well . . . . If the current thinking is
correct, then we might be aware of only 3 of the
10 or 11 dimensions that exist.
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Or, worse yet?We might be living in just one
universe out of an infinite number of universes
that were created all together in the
11-dimensional Big Bang that started everything.
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Is all that really so bad though?