extraterrestrial life pdf
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What are we going to talk about?
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EXTRATERRESTRIAL
LIFE
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extraterrestrial life
life which does not originate
from planet Earth
no credible evidence which is
accepted by mainstreamscientific community
science about it is called
astrobiology, exobiology or
xenobiology
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beliefs in
extraterrestrial life
ancient Babylon, Assyria,
Sumer, Egypt, Arabia, China,
India and South America
first western thinker: Thales
in Christianity no question until
shift to heliocentric cosmology
16th Cent. Italian philosopherGiordano Bruno
evolution theory major boost for
alien speculations
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origin(s) of extraterrestrial life,
(if it exists)
emerges independently
or
panspermia / exogenensisThomas Glatz - Markus Maier / 01 2010
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possible basis and form of
extraterrestrial life
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Evolution andmorphology
Biochemistry
Basis
Form
Universal characteristics
Parochical charcteristics
similar to life on earth
completely different
complex
simple
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scientific search for
extraterrestrial life
Thomas Glatz - Markus Maier / 01 2010
direct search
indirect search
SETI
wow Signal
no direct evidence
of extreterrestrial life unitl now
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... and why it might be (not) a good thing that there
is no evidence yet...
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how likely is it to find life in space
Drake Equation
N = R* fp ne fl fi fc L
N = The number of civilizations in The Milky Way Galaxy whose electromagnetic
emissions are detectable.
R* =The rate of formation of stars suitable for the development of intelligent life.
fp = The fraction of those stars with planetary systems.
ne = The number of planets, per solar system, with an environment suitable for life.
fl = The fraction of suitable planets on which life actually appears.
fi = The fraction of life bearing planets on which intelligent life emerges.
fc = The fraction of civilizations that develop a technology that releases detectable
signs of their existence into space.
L = The length of time such civilizations release detectable signals into space.
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so where are all the aliens - the Fermi paradox
conflict between an argument of scale and probability
and a lack of evidence
the apparent size and age of the universe suggeststhat many technologically advanced extraterrestrial
civilisations ought to exist.
However, this hypothesis seems
inconsistent with the lack of
observational evidence to support it
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explaining the Fermi
paradox theoretically
no other civilisations
currently exist
rare earth hypothesis
Its the nature of
intelligent life to destroyitself
its the nature of
intelligent life to destroy
others
human beings werecreated alone (religion)
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explaining the Fermi
paradox theoretically
they do exist, but we see no
evidence
communication is
impossible due to
problems of scale communication is
impossible for technical
reasons
they choose not to
interact with us they are here unobserved
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explaining the Fermi paradox by example
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speculations
close encounters
UFO etc
ancient astronaut theory
conspiracy theories
nazca lines
tunguska event
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Aliens in Pop Culture and Science Fiction
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Most common types of Aliens in SF
Humanoid aliens
Insectoid aliens
Arachnidaliens
Robotic aliens
Avian aliens Plant aliens
Aquatic aliens
Cat-like aliens
Elder race
Energy being
Grey alien
Little green men
Jovian
Killer Klowns from OuterSpace
Martian
Nordics
Reptilian humanoid Roswell rods
Venusian
Xenomorph (alien)
Predator (alien)
Transformers
Eosapien
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http://en.wikipedia.org/wiki/Jovian_(fiction)http://en.wikipedia.org/wiki/Jovian_(fiction)http://en.wikipedia.org/wiki/Jovian_(fiction)http://en.wikipedia.org/wiki/Little_green_menhttp://en.wikipedia.org/wiki/Little_green_menhttp://en.wikipedia.org/wiki/Greyshttp://en.wikipedia.org/wiki/Greyshttp://en.wikipedia.org/wiki/Energy_beinghttp://en.wikipedia.org/wiki/Energy_beinghttp://en.wikipedia.org/wiki/Elder_racehttp://en.wikipedia.org/wiki/Elder_racehttp://en.wikipedia.org/wiki/Cat-like_alienshttp://en.wikipedia.org/wiki/Aquatichttp://en.wikipedia.org/wiki/Planthttp://en.wikipedia.org/wiki/Avianhttp://en.wikipedia.org/wiki/Robothttp://en.wikipedia.org/wiki/Arachnidhttp://en.wikipedia.org/wiki/Eosapienhttp://en.wikipedia.org/wiki/Transformershttp://en.wikipedia.org/wiki/Predator_(alien)http://en.wikipedia.org/wiki/Xenomorph_(alien)http://en.wikipedia.org/wiki/Venusianshttp://en.wikipedia.org/wiki/Rod_(cryptozoology)http://en.wikipedia.org/wiki/Reptilian_humanoidhttp://en.wikipedia.org/wiki/Eosapienhttp://en.wikipedia.org/wiki/Eosapienhttp://en.wikipedia.org/wiki/Transformershttp://en.wikipedia.org/wiki/Transformershttp://en.wikipedia.org/wiki/Predator_(alien)http://en.wikipedia.org/wiki/Predator_(alien)http://en.wikipedia.org/wiki/Xenomorph_(alien)http://en.wikipedia.org/wiki/Xenomorph_(alien)http://en.wikipedia.org/wiki/Venusianshttp://en.wikipedia.org/wiki/Venusianshttp://en.wikipedia.org/wiki/Rod_(cryptozoology)http://en.wikipedia.org/wiki/Rod_(cryptozoology)http://en.wikipedia.org/wiki/Reptilian_humanoidhttp://en.wikipedia.org/wiki/Reptilian_humanoidhttp://en.wikipedia.org/wiki/Nordic_alienshttp://en.wikipedia.org/wiki/Nordic_alienshttp://en.wikipedia.org/wiki/Martianhttp://en.wikipedia.org/wiki/Martianhttp://en.wikipedia.org/wiki/Killer_Klowns_from_Outer_Spacehttp://en.wikipedia.org/wiki/Killer_Klowns_from_Outer_Spacehttp://en.wikipedia.org/wiki/Killer_Klowns_from_Outer_Spacehttp://en.wikipedia.org/wiki/Killer_Klowns_from_Outer_Spacehttp://en.wikipedia.org/wiki/Jovian_(fiction)http://en.wikipedia.org/wiki/Jovian_(fiction)http://en.wikipedia.org/wiki/Little_green_menhttp://en.wikipedia.org/wiki/Little_green_menhttp://en.wikipedia.org/wiki/Greyshttp://en.wikipedia.org/wiki/Greyshttp://en.wikipedia.org/wiki/Energy_beinghttp://en.wikipedia.org/wiki/Energy_beinghttp://en.wikipedia.org/wiki/Elder_racehttp://en.wikipedia.org/wiki/Elder_racehttp://en.wikipedia.org/wiki/Cat-like_alienshttp://en.wikipedia.org/wiki/Cat-like_alienshttp://en.wikipedia.org/wiki/Aquatichttp://en.wikipedia.org/wiki/Aquatichttp://en.wikipedia.org/wiki/Planthttp://en.wikipedia.org/wiki/Planthttp://en.wikipedia.org/wiki/Avianhttp://en.wikipedia.org/wiki/Avianhttp://en.wikipedia.org/wiki/Robothttp://en.wikipedia.org/wiki/Robothttp://en.wikipedia.org/wiki/Arachnidhttp://en.wikipedia.org/wiki/Arachnidhttp://en.wikipedia.org/wiki/Insectoidhttp://en.wikipedia.org/wiki/Insectoidhttp://en.wikipedia.org/wiki/Humanoidhttp://en.wikipedia.org/wiki/Humanoid -
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Thank you for your attention
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Discussion
Do you think there are alienssomewhere in the universe?
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Discussion
Do you think aliens are likely to befriendly or unfriendly?
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Discussion
What do you think aliens look like?
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Discussion
Why do you think aliens inmovies and comic books generally
have a human shape and eyes?
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Discussion
Whats your favorite movie about aliens?
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Discussion
Do you think aliens are likely to bemore or less intelligent than us?
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Discussion
Do you think aliens would prefer tocommunicate with us or other species?
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Discussion
What would you say to an alienif you met one?
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Discussion
What would you do if you saw a UFO in afield near your house?
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Discussion
What do you think of people who say theyhave met or were kidnapped by aliens?
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Discussion
Where do you think the ideaof aliens from outer space came from?
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Discussion
Do you think aliens would be afraid ofhumans?
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Discussion
If aliens visited Earth for a week, what doyou think they should see to fully understand
us and our achievements?
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Discussion
How likely is it we will ever be able to visit aplanet that has aliens?
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Discussion
Do you think its worth your governmentspending money on alien research or sendingsignals into space in case aliens are listening?
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Discussion
If the secret service discovered an alien, doyou think they would tell the general public?
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Discussion
If an alien visited Earth, what would it sayabout our planet and people when it returned
home?
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Extraterrestrial Life Thomas Glatz - Markus Maier