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Astronomie – so what | David Gruber | TEDxBolzano


[Music]

there sky at night for millennia

Let us look up at the people

sparkling stars and thousands

Years of us also accompany us to ask

this universe about us the constellations

like here orion half short and hunter

and also those named after gods

Planets such as Mars or Venus die

still testify that the sky of

antique 1 the kingdom of gods and

myths was

but thanks to our mind and then

increasingly improving technologies

could in the universe more and more

elicit his secrets

myths like me in the scientific

discoveries and the gods

replaced by laws of nature so we know

for example today that the red color

of Mars, named after the war god

They did not plan anything on the planet

spilled blood has to do but that

the mars simply a rusted one

planet is and that the beautiful bright and

splendid light of the venus that we as

morning star or even evening star can

but absolutely nothing with the

goddess of love and beauty to do

has detected space probes

that you poisoned her at the same time

cooked and crushed

so we could ask more and more

Everybody answers about that worldwide

new answer also brought new ones constantly

ask questions

almost with beige pants rider after

each new chopped off head two new ones

nachwuchsen So we know, for

example today that I have about ours

Heads of red giants and white dwarfs

are located

We also learned that it’s up there

veritable monstrosity issues directly

the world of science fiction black

holes for example

and that’s huge galaxies up there

There are huge star collections

consisting of hundreds of billions of

stars and up there all the time

new stars in the emergence are the

so-called star moods

or quite casually formulated stars

kindergartens

we also have many thousands of planets

discover the stars that are far away

to circle around

but whether it’s on this planet too

water gives or maybe even lives

We do not know that today and we do not

may have understood by now

how our universe was born in this

ominous big bang before 13 and a half

billions of years, we also know

that for the most part it consists of things

of which we almost no

have a clue dark matter and dark

energy exciting fascinating

incomprehensible when I visit my

planetarium of these wonder of

this fascination for the cosmos

told and reported hired me

visitor 50’s mr glasses suit one

ask a very crucial question

he does not ask all other visitors

after and what brings me all the while there

can imagine myself as me

felt so have but can for them

the most important of the world for me

but i could already ask his question

retrace a classic question of

homo oeconomicus of the economic

People like us all are not doing without

a benefit

His question is therefore more aimed

max everything was nice and nice and

interesting what tell us about that

but I have other problems

I can pay my next rent

what is the stock price?

twitter drank

I would have him on many different

Kinds of answers could have been his

example can say that the

astronomy use no has just

like looking at michelangelos

david has no use or the visit

in Europe could have said that

out of science itself

sometimes completely random and

unexpected developments and

inventions result in innovation

in another area their mission

find the reader but quite honest

that they only peanuts the astronomy

that provides the answer to a

the questions of humanity

she provides the answer to the question

Where do we come from

the answer to this question depends

directly related to this

they hang together with another

question, it depends on the one with the

ask why stars actually shine

the answer my ladies and

Gentlemen is the most romantic to me

known from the world of astrophysics

and the answer is nuclear fusion

I see that they have something clear

was now waiting for nuclear fusion but

From what astrophysics has you up to

tell star stars you start

live in a huge rotating

cloud of gas and dust under the

self-weight of this cloud is drawing

this together she contracts her

collapses and is doing in her

inside ever denser and denser and

especially hotter and hotter

at some point it is inside of this

cloud so dense and so hot that four

Hydrogen nuclei to a helium

merged or just merged

can

this process releases energy and

a new star is born

our star the sun is currently changing

600 million tons of hydrogen so

twice the weight of the whole

humanity in 596 million tons per

second

in other words , our sun will pro

second lighter 4 million tons

Thanks be to energy and mass

only the two different sides

same medal

so read this massive loss that

sun is emitted in the form of

energy that is why ours

the sun is shining and that is the reason

why stars light up this nuclear fusion

inside, in the core of the star

plays out through one

radiation pressure and thereby acts after

inside act the gravity of the outer

Gas fill

the star is stable

he lives enlightened but this nuclear fusion

does not go on forever so are stars

in the end, how they become human

born

They live by human standards

very long

but die at the end of their long life

see the ultimate fate of one

but then sterns hangs before its mass

from the small low-mass stars such as

our sun

the lives are very long billions of

years, but once inside

the stars of this little star

Hydrogen is used up

following the radiation pressure to the outside

Falling away gravity gains it

pulls the star together is in the

inner again a bit hoarse and

Now the following can happen around

around the core hydrogen to helium

be merged and in some

At the core, stars can be the helium too

carbon are the works

stabilized star but now happens

something strange as star stretches

by and cool outside and it

a red giant emerges our sun

will be around four and a half billion

Years will end like this

she will even reach up to her

to incorporate the earth

in the course of time then this red struck

Giant his outer gas heights into

universe and puts the inner core

free of the star a cosmic ash

ball the sun was once upon a time

so called white dwarf the big ones

massive stars

these are the rock stars of the stars

Motto is here ran almost a year

They live only a few million years

but what the stars do they create

Creating is the helium and the

carbon continues to grow inside

merge into heavy elements

Carbon initially oxygen

oxygen to neon near and so magnesium

magnesium silicon silicon up to

Hot then is by nuclear fusion

could not do any more heavy elements

when the iron is produced and what

happens gravity gains the outer

gas hoses fall unchecked on the

inner dense core and rebound

this star tears the star into pieces

a huge explosion is the result

those of the supernova call in this awesome

nova can then have heavier elements

arise as the ice here we have so

a star that will explode very soon

becomes

this is the left one

upper shoulder star in the star image orion

The star is truly a ticking

time bomb

look forward to a cosmic fireworks

the moment this star explodes

her newspaper without any problems

read

who too bright lights up again fully

approximately and luckily the earth is far

enough of this star can take us away

nothing happens

but that is now very soon

explode

Very soon the next will be called sometime

one hundred thousand years we are human

the mayflies of the cosmos have to

You say so but still I look in

to pray on each clear winter night

to orion and now you think me

Stop it and finally explode

These star explosions are incredible

rarely on a loved one’s life

to see

a little over 1000 years ago

I have to say a lot less there

year 1054 there was such a

supernova in the constellation bull one can

even today the remains of this

supernova by means of small telescopes still

see

is left after such a supernova

no white dwarf but that the

astrophysicist as neutron star or

even black hole called

but the quintessence is the moral of this

story I just told you

I have the development of the life of one

the moral is the one during the

life and the start of a star

Most elements are created

we know and it will come too

all those elements through stars at all

that’s it

from the explained pose as an example

for carbon called carbon

we have here in our skin we have

in our blood

calcium in our bones the air the

We are here now at the exports

Inhale the air is nitrogen

and oxygen and all that was before

physically into one for many years

stars inside and not only that too

the and only white stars died because of them

their innards also fling into the

the universe makes new stars new

It is you and me that form planet

here today and now

if your jewelry on the finger on the neck am

ear carries the gold and silver atoms

were in billions of years ago

supernova involved or the brand new

Findings show in the

Merging of two neutron stars

whether Jesus died for us on the cross

that is the proverbial question of

but it is an irrefutable one

scientific fact that at least

a star died for us that we

can be here today and probably

come diatoms left hand of one

other star like the dom in your right

the big exception of the whole gives

some but the big exception is the

Hydrogen hydrogen was formed in

That’s not just the event

hydrogen has produced but even

the universe at the big bang

there originated space and time and the

most of the hydrogen I have

So my visit internet about it

answered

until only shows that we have the product

are one year billions of years

continuous development and evolution of the

we are the children of the universe

stars and she also shows us that

not just in this one

The universe inside is not showing

only that we are part of the universe

she just shows a lot more important that

the universe is inside us too

and i can i can my visitors

already understand

Everyday life puts us off every day

new problems and new ones

challenges

but my personal rest is in the

starry sky

Whenever I can do it

from the bottom attracted by the

to raise the gravity of everyday life

I always get used to the stars

again a bit aware maybe

my problems are not as big as

They seem

you will be aware of your life on one

small dust grain in a huge

cosmic arena why there are so

much more

it ‘s just as if the stars are mine

the blinkers could settle the

constantly or more often trying again

if you are the next

sometimes plagued by everyday worries or

Being tormented makes it just like me

bring a glass of wine but think

Anyone swallow that here

a bit of a big bang and a bit

you take stardust thank you

crap david gruber

[Applause]

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