the universe might have popped into existence from an infinitely small point
spontaneously and formed hundreds of billions of galaxies which led to me
sitting here filming a youtube video in my room and everyone's walking around like this is normal
life is a miracle guys g'day guys welcome back my name is dylan dance i'm a physicist from the land
and under sorry about my little hiatus there i'd be disappearing apologies but we're back
we're going to be making a whole bunch of videos this month at least i'm gonna try to before we
jump into it i've got another book suggestion for you 2010 odyssey two my favorite ever book series
in fact i love it so much i've got two of them i don't know why you need two of the same book
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audible visit audible.com still and dance or text still and dance to 500 500 let's get back into the
video apologies if you can hear a fly buzzing around he is coming with us on this journey
to the end of the universe so let's get started let's get straight into it let's go what does
our future hold not too much everything has its wonders even darkness and silence it's true deep
you look into things you realize almost everything is interesting what does the future look like
how will the universe meet its end it's pretty bleak we may never be truly certain that's a great
thing to put at the start but science has begun to paint a stunning picture of how the future might
unfold emphasis on the might let's take a journey to the end of time we will travel through time
exponentially doubling our speed every five seconds okay this vision of the future will
surely evolve as we probe for more clues but one thing is clear the universe has only just begun
certainly has hardly just begun oh my boy david adam what we do now and in the next few years
will profoundly affect the next few thousand years i saw a mars colony
wow
deadly gamma ray burst yeah we think possibly one of the mass extinction events
was caused by a gamma ray burst saturn's rings vanish that's actually probably gonna happen
sooner they're rapidly disappearing major asteroid impact boom that as well could
happen tomorrow you might think nasa monitors a lot of the sky and they do they try their best
but there's some stuff that hides in the sun you can't exactly see it if it's coming directly
in the sunlight so miss things until they've already passed us or they're just about to pass us
so don't be surprised if you wake up tomorrow and there's a you know giant about to hit our planet
it's a possibility you super conscious increases luminosity oh this brian talks so yeah this sun
our sun is going to expand slowly getting hotter uh what year are we up to 710 000 yep
because in about a billion years the oceans are going to evaporate and unless we figured out how
to get off this planet first still around i highly doubt it but fade away to nothing
all plant life dies its core will collapse this generates will cause its outer layers to expand
the red giant and then it goes soup it goes nova sorry and uh the outer layers
explode in a planetary nebula that's what they called it's a bit
the sun is now dead bad name it's remaining slowly cooling in the freezing temperatures of deep space
50 billion years already okay
what are we three and a half minutes in 25 minutes to go to the sun is the same as for
all stars one day they must all eventually die and the cosmos will be plunged into eternal night okay
we're almost at a trillion years eventually we'll run out of fuel the temperature of the universe so
the white dwarfs they're actually going to turn into black dwarfs the universe isn't
even old enough yet for any of these black dwarfs to even exist we're at 2 trillion
years and everything's dead and we've got 25 minutes to go why are we here just to suffer
and to be no more new stars
created and so that the universe will end not with a bang but with a whimper
and not in fire but in ice
with the death of the last sun the age of starlight comes to an end
billion trillion years neutron stars collide
get lots of cool stuff out of one of those collisions like gold and we think at least
i think i saw a red of paper and we think a lot of the gold in the universe actually
might have come from these uh merging of neutron stars which is really cool
any surviving life forms may find refuge around aging white dwarfs yes
the music is sensational
when the screen goes black and you just see how ugly you are
trillion trillion years a dark dense decaying balls of degenerate matter
more than the ashes of stars their constituent atoms are so severely crushed
that black dwarves are a million times denser than our sun
that is a didgeridoo that's some aboriginal music that i love that
stars become black to reach this point we black believe
in the universe that's what i said before
i hope this puts some things into perspective for you guys
gives you a bit of cosmic humility nothing like a good existential crisis to uh
make you realize that piece of homework doesn't matter oh here we go as the expansion the universe
accelerates it begins to spread matter part faster than the speed of light that's already happening
billion trillion trillion years so i think his time scales are a bit off so that's going to
happen well before that you're talking like a hundred trillion years things are going to be
pretty much over by this point distant galaxy the stars are receding so fast that their light
has become undetectable that's not that far away the secrets of the cosmos are locked away forever
i should say though that these you know distant
current theories predict that atoms themselves will begin to decay destroying all remaining
matter in the unit that's true protons have a half-life a proton it's a very long time
fundamental building blocks of atomic matter what makes us up can just spontaneously fall apart
any material that evades the pull of a black hole eventually dies away as its protons disintegrate
proton decay is still unproven so this chapter of the future could look very different in the
light of nudist i don't like him saying that because um a lot of this is unproven
like why hasn't he said that for everything we're a long way into the future now proton decay
the mata inside black dwarves the last mata in the universe will eventually
evaporate away and be carried off into the void as radiation leaving absolutely nothing behind
that's just not true brian cox you've still got dark matter we don't know what that even is but
it has mass and because we see its interaction through gravity so it'll probably still be around
so there's still be a lot in the universe
with the black dwarves gone there won't be a single atom of matter left
like i just said possibly dark matter is possibly made of atoms will be particles of light and black
holes the black hole error begins should really be called depression no planets no stars no lingering
stellar remnants for life to cling to yet even now time has only just begun to tick our universe
gives a life only a brief moment to shine a haven in time saved from its fiery birth an icy death
how do we how do we know that like life might come in many different forms we've got one
sample sample size of one we can't really speculate as to what life really can be
like and it's you know look how creative the universe is what's going on every time we make
these discoveries it's usually beyond what we even imagined so to think that there's not more
unimaginable things happening in the universe is i think a lack of uh you know
understanding of history and how we've come to know what we know it's a lot of cosmic humility
he did mention that black holes will evaporate so that is filled with black holes continue to evolve
so cool they'll lead each other and they'll get bigger and maybe they'll fall into the
supermassive black hole and it'll get bigger the universe will still be an exciting dynamic place
it's just that the time scales you're talking about are now trillions of years instead of
scientists used to think black holes were immortal but even these were one day dying
time scales of unimaginable length but trillions of years into the future
on that time scale even the black holes begin to evaporate
black holes begin to die
i love the waltz it's very fitting what will be the future of the universe well if the
dark energy remains dominant and repulsive if big if the universe will expand forever
and this comes down to you know the universe is called
the end of time or whatever and he just said it will expand forever what is time
the universe resides in empty space and we don't understand why but we do know what will happen
if that energy continues to be there the universe will become cold and dark and empty
that's the future as it might be we don't know that's why he's my boy might be understand the
nature of dark energy until we do we won't know the future we won't even understand our
discovering the true nature of dark energy could change our vision on the future dramatically yes
like dramatically dramatically
if it somehow weakens over time the universe could collapse under gravity and a big crunch
yes after an unimaginable length of time even the black holes will have evaporated
and the universe will be nothing but a sea of photons gradually tending towards the
they like we were saying earlier cause virtual particles that pop in and out of existence
so that's how the universe could seemingly come from nothing once again you know just random
quantum fluctuations that cause some inflationary events and then a big bang and voila we're sitting
in our rooms making youtube videos everything has its wonders even darkness and silence and
i learn whatever state i may be in they're in to be content that is a beautiful message
yeah make sure you guys stay in the present and enjoy whatever the hell this is because
it's pretty it's clearly a miracle so i think we should end the video there
and i hope you guys you know look at this positively rather than in a depressing light uh i
hope it gives you an existential crisis though and wakes you up to what is going on in this universe
life is whatever we're doing right now and walking around it's not normal um so make sure you think
about dwell on stuff and i think you should dwell on it often because it allows you to appreciate