What Did James Webb Really See At The Beginning Of Time?
FULL TRANSCRIPT
[Music]
on Christmas morning 2021 a mighty
rocket burst into
life quickly climbing away from the
ground it soared into the cloud Laden
sky and headed for the darkness of deep
space its Target was 1.5 million kilom
from Earth at a place where the
gravities of the Sun and our planet
combine in a very particular way in this
spot known as a lrange point the payload
would be held in space fixed in relation
to the Earth as it circles the sun once
in location this payload began its
delicate deployment immense sheets
unfurled to shade it from the glare of
the Sun as hexagonal mirror segments
unfolded and clicked into place it then
waited until it cooled to The Frigid
background of
space after several months the device
was ready for Operation the latest in a
long line of technological leaps a
signal was sent from the earth for this
most recent Observer to awaken to open
its eyes and appearer into the
darkness after 30 years and 10
billion the James web Space Telescope
had finally
arrived James Webb possesses a 6 and 1/2
M mirror and cameras tuned to see in the
infrared its mission is to map the lives
of young stars in our own Milky Way and
hunt for life on planets in orbit around
other Suns but it was its view of the
early universe that caused the first
controversy the power of James web
sitting far from the glow of the earth
is its ability to peer far back in time
its sensitive instruments can discern
light that has traveled for more than 10
billion years emitted by the first star
in the first fledgling galaxies through
web's eyes we can witness the birth of
the
universe astronomers of course had
expectations of just what web should see
in the infant Cosmos over the 20th
century they had come to realize that
galaxies even our own Milky Way had
grown over time they start as small
groups of stars but through collisions
and mergers small galaxies grow larger
until over many billions of years
galaxies with hundreds of billions of
stars appear in the cosmos but as
astronomers poured over the new images
from James web something did not seem
right as they peered into the epoch of
the earliest Stars they expected nothing
but small featuress blobs but instead
they saw something
unexpected large well-formed galaxies
peeking out of the darkness objects that
made no sense
for since the turn of the 21st century
astronomers have believed themselves to
be in an era of precision
cosmology they had determined that
gravity in the universe was dominated by
a strange dark matter and the expansion
of the universe accelerated due to an
even stranger Dark Energy both of these
have fed into the most accurate model of
the universe we have a model known as
Lambda C
M and yet James web had revealed large
galaxies appearing to exist in the first
billion years of the life of the cosmos
going against the predictions of this
hardfought model some scientists have
been driven back to the drawing board to
revise their theories of Galaxy
formation but others much more worried
fear for the very foundations of our
understanding of the
universe but this is not the first time
that new eyes on the sky have demanded a
revision of the Cosmos since the
earliest of times people have looked to
the Stars to uncover the workings of the
universe and since the earliest of times
they have been surprised by what they
saw and so what do we understand about
those first galaxies forming in the
black just after the big bang and do
these surprises thrown up by James web
derail our understanding of the universe
or help strengthen its foundations even
further
[Music]
the first food eaten in space was a beef
and liver paste that Yuri Karin squeezed
into his mouth like salty toothpaste he
followed it up with chocolate sauce this
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[Music]
YouTube The Story Goes that Galileo
galile was the first to successfully
turn a telescope to the skies the device
a simple arrangement of lenses had only
recently been invented its Earthly
employment having mainly been navigation
surveying and of course Warfare but
Galileo's Focus was the Motions of the
heavens the invention of the telescope
is implicitly tied to the birth of
modern science a little more than half a
century after Galileo Isaac Newton also
turning his attention Skyward replacing
lenses with a silvered mirror he
revolutionized the design of telescopes
sharpening the image and constructing
the Foreigner of day's massive
telescopes including James web but
unlike Galileo Newton's observations
didn't revolutionize the cosmos but his
discoveries of the laws of motion and
gravity certainly did now the orbits of
planets moons and comets were understood
not to be a sign of the Divine but the
results of physical laws that pervade
the entire
universe astronomical telescopes
steadily developed after the time of
Newton and through each Advance more
more and more light could be collected
the Improvement of optical systems
resulting in clearer and sharper images
astronomers now had the tools to reveal
the true beauty and complexity of the
universe and so just what did they
[Music]
see as well as stars and planets the
skies were often home to magnificent
comets and by the mid 1700s French
astronomer Charles Messier was hunting
for these Heavenly Bodies he was looking
for the fuzzy coma of a comet formed as
ice and dust a boiled off the cometry
surface but in his search he found
himself constantly
frustrated we now know that comets are
rocky icy bodies that orbit the Sun and
Messier had expected the fuzzy coma to
move night after night during the
comet's travels but he came across
numerous fuzzy objects that stubbornly
remained in place not changing at all
Messier decided to elay his frustration
by cataloging all these anomalies
ignoring them if he happened to spot one
and so though messier's catalog of 110
objects mainly contains simple clouds of
gas within our Milky Way unknown to
Messier many of his objects were much
much more
distant throughout the 19th century with
better telescopes astronomers had found
structure in some of messier's objects
swirling spiral patterns hinting the
objects must be rotating eventually two
giants of astronomy went head-to-head to
settle the question and by 1921 a great
debate on the nature of these spiral
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