Why Does The Universe Look Like This?

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what

Dior the dress

not just your house number or the name

of your street

where actually are you in a town or a

city which is in a country on a

continent on Earth

but where

is Earth

whites in the solar system between Venus

and Mars you might say

where

is that

the solar system is the main part of the

art cloud a vast collection of comets

asteroids and icy objects swirling at

the fringes of the sun's sphere of

influence the Oort cloud resides in the

local Interstellar Cloud which is in the

local cavity of the Orion arm of the

Milky Way galaxy The Milky Way is a

spiral galaxy with beautiful sweeping

arms of millions upon millions of stars

all rotating around a bright Galactic

core with a dark supermassive black hole

at its Center at over a hundred thousand

light years across the Milky Way is vast

but it is still just a sliver of what we

can see zoom out further and you will

see a local group with 30 to 50 small

galaxies and a monster on a collision

course the Andromeda galaxy twice the

size of the Milky Way Andromeda is

speeding towards us we will collide in a

few billion years tearing each other

apart before coalescing into one but

when you zoom out even further the

impending Collision of two galaxies

seems inconsequential at the scale of

millions of light years the structure of

the Virgo supercluster a collection of

thousands of galaxies becomes apparent

and dwarfing even that is the Lanier

chaos supercluster hundreds of millions

of light years across containing several

other superclusters like our Virgo and

which is itself part of the Pisces cetus

supercluster complex a galactic filament

almost a billion light years long

and it is now that the cosmic web

becomes visible there are more filaments

like our own as well as great strings of

superclusters there are also giant

stretches of space with virtually

nothing in them

like the booties void an area 330

million light years across in which we

have discovered barely 60 galaxies

an inkblot on the speckled sky

zooming out further we finally reach the

edge of the observable universe where

primordial light has been traveling

since nearly the beginning of time 13.8

billion years to reach our eyes

but since then of course the universe

has expanded further meaning that the

true distance to the edge is about 46

billion light years in One Direction

meaning the full observable universe is

a sphere 93 billion light years in

diameter

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structures any larger than a few billion

light years are hard to Define without

current technology partially because we

are trying to map something we inhabit

and partially because there may well be

a limit something scientists call the

end of greatness but at every level up

to this point planets solar systems

galaxies clusters superclusters

universe is full of structure it is not

a random and chaotic jumble it seems

organized yet the universe started as a

hot dense soup of particles why should

it now be structured why did that hot

soup evolve into a universe where some

parts are filled with beautiful sweeping

arms of stars While others are Barren

deserts

and more importantly

how do we know

how did we start this channel to begin

with a lot of research and in-depth

exploration of the universe's first

moments and a huge part of that was done

through wondriam the educational

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the year is 1502 and Nicolaus Copernicus

should be studying medicine in Padua it

is the Center for Medical Education in

Europe all the best teachers and

students gather there to learn how to

heal the sick but Nicolaus is a polymath

he is learning medicine but he's also

reading Aristotle and Plutarch and Plato

and finding holes in ptolemy's theories

in his spare time finishing his degree

he returns home to Poland to work as a

physician for his father though he

doesn't forget about the cosmos or our

place in it and so it is a decade later

that he writes a pamphlet outlining his

now ubiquitous Theory we are not the

center of the universe the Earth orbits

the sun just like all the other planets

we are not special niklaus knows the

Uproar this will cause so he doesn't

publish right away it is only in his

70th year some say it's actually on

deathbed that he proves the final copy

that the book finally comes out a shakes

the very foundations of science

astronomy philosophy and religion an

idea so dangerous and Fantastical that

its proponents would be persecuted for

decades after its publication

the heretical notion that our Earth is

just the third planet among many

at the time it was a shocking thought

but it marked only the beginning of a

larger Revelation for if we are just

some Planet orbiting a random star what

does that make us not

special it's a sad realization at first

but when we think deeper it opens up a

world of possibilities if we are not

special

what else is out there who else is out

there

to discover known as the copernican

principle the idea is now a Bedrock of

modern cosmology and has two related

tenets the Earth is not special we don't

occupy some privileged position in the

universe therefore observations from the

earth should be relatively

representative of observations from

anywhere one modern day discovery that

backed up this claim was the detection

of the cosmic microwave background or

the CMB a fuzzy background static it

permeates the sky no matter in which

direction you look no matter how

powerful your telescope if you keep

zooming in on a part of the sky with

nothing in it you will still detect

faint microwave radiation always with

almost the same wavelength emitted at a

time close to the beginning of the

universe at the moment when Mata cooled

down enough for protons to capture

electrons and become clear gas it is

everywhere in this regard our bit of the

universe is clearly not special outer

space no matter which direction you look

has a temperature of about 2.7 degrees

Kelvin it doesn't matter if you are