"

i once saw a scientist
on television.
and she was speaking generally
about science things
(being a scientist and knowing science things
etc.)
and, speaking generally
i am not a science
person,
and while i respect them,
i do not have much interest
in scientists
or science things.
so i went to switch the channel
at the precise moment that the presenter sitting beside the scientist asked:
what,
in your opinion,
is the most ASTOUNDING fact
about the universe
?
and this stopped me.
because it is not often that television presenters ask such interesting questions,
and the scientist was pursing her lips in a thoughtful way that made me think
i wanted to her her answer
to the interesting question.
after a pause,
she did not look directly at the
camera,
but directly at the presenter.

did you know,
she said,
that there are atoms in your body.
the presenter laughed.
of course,
he said.
what else would my body be made of?

well,
said the scientist,
and i did not need to look at the television screen to know
she was smiling.
do you know where those atoms came from?
well,
said the presenter.
and he did not say anything else.
i snickered from my place in the armchair
and the scientist smiled again.

the most ASTOUNDING fact that i have ever known,
she said,
is not a fact, specifically,
but the story of every atom on this planet.
the ones that make up the grass and the sea and the sand and the forests and the human
body.
these atoms came
from stars.

the presenter sat forward and so did i.

stars,
continued the scientist,
are mortal
like humans.
they die,
and, in their later years,
are unstable.
it pains me a little to say it, but a star’s death
is far more dramatic than a human’s.
is it? asked the presenter.
the scientist was looking at him still,
and i felt strongly as though i was listening in on a very private
conversation.

it is, the scientist nodded. the stars
i am referring to,
she said,
collapsed and exploded a very long time ago, and scattered their enriched guts across
the entire universe.
here, she paused, and her words caught in my mind in a way that made me wonder
if she was a scientist
or a poet.
their guts, she said whilst sipping from a glass of water, were splayed across every
inch
of time and space.
these guts were made of the
fundamental ingredients
of life and existence.
carbon and oxygen and nitrogen and hydrogen and all the
rest of it.
all in the bellies of these stars that flung themselves across the universe in protest when it was their time to die.

and then? asked the presenter.
the scientist’s lips quirked upwards. and then, she said.
it all became parts of gas clouds.
ones that condense and collapse and will form our next solar systems -
billions of stars with billions of planets to orbit them.
and these planets have the ingredients of life sewed into the very fabric
of their own lives.

so, she said, smile still playing on her lips -
where do your atoms come from?
from those gas clouds, said the presenter.
no, said the scientist.
from those stars.

every atom, every molecule, every inhale and exhale and beat of your heart, is traceable
to the crucibles that cooked life itself.
and you are sitting here and so am i and so are your viewers at home,
and we’re all in the universe, aren’t we?
yes, said the presenter.
but i’ll tell you what’s even better, the scientist smiled wider.
the universe is in us. your atoms and my atoms and your camera men’s atoms came from those stars. you’re connected and relevant without even having to try. you are made of stardust and the fabric of the universe.
that is the most ASTOUNDING fact
i can tell you.
the presenter smiled and the scientist smiled wider and i smiled too,

and later i switched the channel to something less scientific
and wondered if i should feel small,
tiny and insignificant in relation to the stars that collapsed and exploded and
threw themselves everywhere.
and that is how my mother found me,
sitting on the sofa.
and she asked me what was
wrong,
and i said,
nothing. i’m just a lot smaller than stars are.
my mother is very literal woman. as such, her natural response was:
of course you’re not. don’t you see how small stars are?
that’s only from a distance,
i said.
maybe you’re looking at yourself from a distance too, she said.

and she left the room and it is years later now, but i still
think about the scientist and what she said
and my mother and what she said
and i still see the presenter on television.
and i still think that the stars are very big
but now i think,
they are in me.
so i am big too.

"

‘the most astounding fact’ - j.c., inspired by neil degrass tyson’s talk of the same name (via girlonfired)

@galacticsuggestions LOOK FRIEND!!!!

(via n–e-v-e-r-l-a-n-d)

(Source: finitively, via wildehack)

joshpeck:

vethox:

Look at your wrist, see the blueish veins? The blood flowing through them contains hemoglobin, a protein that has four iron atoms incorporated into its structure. Iron is only naturally produced in one place, it can only be forged in the core of dying stars.

Every time you look at your veins, remember that you are built from, and kept alive by, pieces of stardust.

This is actually a thing, to the very best of my knowledge!  Iron might not be only produced in the heart of a star on its way to going supernova (I would need someone with, y’know, actual degrees to say that for certain), but that’s certainly a major source!  The way stars work is through fusion, or taking two atoms of an element (or different element) in an environment of massive heat and pressure and joining them to create a new element.  Fusion gives off massively more energy than fission, which we’re more familiar with and can actually do ourselves with elements like uranium, but the hiccup in fusion is that there’s a point at which the energy gain is no longer high enough to offset the density of the atom created.  So, fusion works GREAT on things like hydrogen or helium, which are both very small and therefore easily fused to give massive energy yields–this is why the biggest stars tend to burn very hot (not an absolute rule), because they have so much of these smaller elements available.  These enormous stars–the sort of stars that die with a bang (nova/supernova) rather than a whimper (petering out)–burn hot and build up enormous pressure in their core, so the deeper you go the bigger the elements are.  

Iron is the turning point, the point where you stop getting energy from fission and start getting it from fusion instead.  As you work up toward iron from hydrogen on the periodic table, you get less and less energy from fusion, and as you get further from iron, into the higher numbers, you get steadily more energy from fission until you reach what we recognize as the radioactive elements, which break up easily enough to be practically applied for energy gain.  Iron, however, is basically neutral: it won’t give energy either way, and managing either one would require a massive energy output.  So, suppose you have a really huge star, a giant of some kind, and it’s been burning away happily for time immemorial (I don’t really have the time to go get data for star lifespans, I’m supposed to be studying for my organic chemistry final), fusing hydrogen into helium and helium into lithium and so on and so forth.  And now it’s reaching the end of its life and the elements it’s creating are getting up to the teens and twenties, and it fuses two oxygens into an iron atom.  That’s the cutoff: the star has now started to die.  The dense iron building up at the core of the star causes it to collapse inward, building pressure, and when the pressure inside gets too much…boom.  Supernova.

So yeah.  Iron is the element that kills stars, and it’s the element that keeps us alive.  It’s…it’s pretty damn cool.

(via yea-lets-do-this-shit)