to
good afternoon before I started
I would like you to close your eyes and that
imagine what a
you have extraterrestrial
it might be something like this
to this or maybe if it’s none of
both this is very likely that
this if there were extraterrestrials
do not look like these we have
here and why do not you have that much
see with the idea that I come to present
today what is astrobiology is my great
passion and this science what you try
explain is whether there is life elsewhere
of the universe to do it we need
know a fundamental thing and it is that it is
life
we know that living beings are born grow
they reproduce and die they did not
counted in school at the institute and
can even the race
I come to tell is a secret this is not
completely true there are exceptions like
what we can see in the photo is the
jellyfish is called torrita without nutrition
and it has a particularity we can
look at the scheme that we see below
in which we see as the egg comes out
long it goes out to a state that we call
as a polyp that develops and ends
being an adult jellyfish
we all think that when they get to the
adult jellyfish
the normal thing is that it dies because it does not pass
from the state of jellyfish to the state of
political and then it happens again the
state of jellyfish and back again
well infinite times but we killed her
this jellyfish will never die for a
natural death
then we have a problem for
define what life is
it is a definition not
biological because we can not measure something
and say that he is alive and we also
we found a problem
and is that the earth exists a great
each diversity of organisms
different each with their
particularities
if we try to look for life in others
planets we will find that very
few have the same conditions as
today we have the same components
chemicals the same distance a
star a star very similar to
Sun
then how can we find the
life on other planets
I would impress them if I told them
that the earth
there are organisms that can live in
climates like this one like this one
fact is a very acid medium and it
located in red river in huelva near
of a volcano erupting or even to
low depths where there is a
expression is very high and there is almost no
light
these organisms that live in these
extreme environments are called organisms
extremophiles the first is a glass of
Water
the water glasses can resist high
low temperatures temperatures the
radiation live in a vacuum
but how does these animals in the
moment when he is in a few
conditions that are not what
Sufficiently adequate for life
loses 99 percent of the water in
her body
then it is when they go to a state of
stand by until it was recovered in another
times the conditions that made
he lived previously but he does not move
the organism of the medium has a
very interesting explanation imagine
that right now in this room
we will eliminate all the oxygen there is
we would die die the
plants would die the eyes but the
Martians would not die and if you’ve heard
well the saying the Martians know each other
the Martians as a group of
living organisms
specifically 27 species that are capable
of living without oxygen do not have any
structure that allows them to absorb
oxygen from the environment and currently
is studying how he does it
and the last photo is of a bacterium that
It seems like little thing but it’s the bacteria
toughest we know in the
currently is capable of withstanding 500
Sometimes radiation that would kill a
human being and can also live in the
vacuum resist high temperatures
the low temperatures
in short it may seem impressive that
all these organisms have
evolved and that the origin may
of this organism be one and that be
common with us this makes us
ask ourselves about the origin of life in
the universe where we come from where
he created everything
currently there are several theories like
for example the panspermia that defends
that a meteorite was the one that took
life throughout the universe and that in the
moment when it hit a
planet if the conditions were given
necessary life would develop in
that planet seems simple although there
two other scientists or halide panini
who proposed another model is called the
synthesis to bioethics and basically
argues that different atoms are
they were gathering forming molecules and
these molecules came together forming
the living beings their peers that we
it seems that all this is closer
of science fiction that of the
reality but really although not
we can travel to the past to see how
everything happened we can study today in
day how can you create life in
another planet and knows what is next
I would like to end the cycle
and that you think again what a
alien
I hope you have changed thank you very much
[Applause]
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