Episode Transcript
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Speaker 1 (00:02):
Joining us is none other than our astrophysicist John Ty Horner.
This morning. Good morning, Johnty.
Speaker 2 (00:07):
How are you going too about yourself?
Speaker 1 (00:09):
Very well? Thank you. No, we want to know about
the Big Crunch theory.
Speaker 3 (00:16):
Physicists from Cornell University and other institutions have published a
new study that tells us exactly how and when the
universe is going to end, Junty, the Big Bang theory is.
They love to call it the Big Crunch whatever crunch, Yes,
dear mate. Look, look I don't know what you take
(00:38):
on it. I know you've often said before you thought
that this was done and dustedn't put away, But no,
people want to bring it out and continue to go
on about when we're going to off we go.
Speaker 2 (00:46):
Well, it's sole part of this ongoing, evolving understanding of
how the universe began to be honest, if you go
back one hundred years, we didn't know you go back
eighty years, people proposed the Big Bang theory, which is
everything was really small and exploded essentially, or the steady state,
which is new material was constantly created, pushing space apart
(01:08):
like a bubble, but it had always been there, and
over time the Big Bang has won really kind of clearly.
That seems to work. Then you go back to the
late nineteen nineties and there was this discovery of something
called dark energy tied to the fact that the universe
is getting bigger more quickly than it should be essentially,
and this is why obvious scientists Brian Schmidt got a
(01:31):
Nobel Prize along with a few other people for discovering this. Now,
that has always suggested that the universe would expand forever
and an accelerating space and it would die not with
a bang but a whimper, would just get kind of
more spread out. But these new results, which include observations
by Queensland scientists, it should be said, okay, suggests that
(01:54):
that dark energy is constant across time, but it's actually changing.
And if dark enage is changing, that means that the
predictions the universe lets band forever might not be correct.
And instead there's a scenario which is what the scientists
are publishing, which they'd have the universe eventually stretch, shreatk, stretch,
and then spring back and collapse really quickly like an
(02:16):
elastic band, like an elastic band, And that's the analogy
people are using. And so the idea here would be
that the universe would live thirty to forty billion years,
of which it spent about seventy five percent of that
time expanding. Eventually that expansion would stop speeding up, slow down, turnaround,
and everything will be pulled back in and you get
(02:37):
this massive, big crunch, which is like the big banging reverse.
Speaker 1 (02:40):
Right.
Speaker 2 (02:41):
Everything gets squashed back into a smaller space, Everything gets
infinitely hot, and everything ends at a finite time rather
than expanding forever.
Speaker 1 (02:50):
Wow, John Dy, that just blows my mind. How will
this affect climate change?
Speaker 2 (02:55):
Unfortunately, it's a very very different timescale. So this isn't
like the Golden Panacea to get us out of needing
solar panels.
Speaker 3 (03:07):
Right every billion years away?
Speaker 2 (03:10):
Is it?
Speaker 1 (03:10):
Yeah, we have to worry about it. Put it in
our calendar.
Speaker 2 (03:13):
It depends. I mean, the best estimate in this paper
is that this will happen in about twenty billion years time,
so again, nothing to worry about, but there's huge uncertainties.
But what I love about this is that it's not
just pure speculation with no predictions. What makes us really
good science is that it's a possible future. This is
(03:33):
one where the universe could play out but there are
tests that are coming in the years to come that
should either support this or knock it over. And that's
what makes really good science. We're really pushing the boundaries
of what we know and what we don't know. And
if you come up with an idea like this, you
needed to make predictions. If this sery is true, then
in the coming years, we'll see this thing. And that's
(03:55):
what this works doing. It's saying in the coming years,
we've got better observations coming. They'll tell us yes or no,
one way or the other. So that's really exciting.
Speaker 3 (04:03):
What do you think, John Ty?
Speaker 2 (04:07):
Honestly, this is enough outside my field that it makes
my head hurt pretty much, such it makes your there
as well. It does. But it kind of comes to
human philosophy thing. Is it scarier to think the universe
will go on absolutely forever until it dies a cold
death of emptiness, or is it better to think that
the universe will rewind and collapse back in and maybe
(04:29):
that will then lead to one of the big bangs.
That's something people talking about the Big Crunch in the
past have speculated that you get this infinitely cyclical universe
where you get a big bang, a universe happens, we
have our chats, the radio happens, all the rest of it.
Then it collapses, and as Douglas Adams says, someone builds
a restaurant at the end of the universe and you
(04:50):
get to watch a g mab GiB whether which is
together again, and then it all happens again.
Speaker 1 (04:57):
Okay, all right, Well Johnny Horner, always amazing, always yeah,
thank you, thank.
Speaker 2 (05:02):
You, pleasure, thank you for having me.
Speaker 1 (05:05):
He's a resident astrophysicist money, he knows what he's talking about.
Joining us is none other than our astrophysicist John Ty Horner.
This morning. Good morning, Johnty.
Speaker 2 (00:07):
How are you going too about yourself?
Speaker 1 (00:09):
Very well? Thank you. No, we want to know about
the Big Crunch theory.
Speaker 3 (00:16):
Physicists from Cornell University and other institutions have published a
new study that tells us exactly how and when the
universe is going to end, Junty, the Big Bang theory is.
They love to call it the Big Crunch whatever crunch, Yes,
dear mate. Look, look I don't know what you take
(00:38):
on it. I know you've often said before you thought
that this was done and dustedn't put away, But no,
people want to bring it out and continue to go
on about when we're going to off we go.
Speaker 2 (00:46):
Well, it's sole part of this ongoing, evolving understanding of
how the universe began to be honest, if you go
back one hundred years, we didn't know you go back
eighty years, people proposed the Big Bang theory, which is
everything was really small and exploded essentially, or the steady state,
which is new material was constantly created, pushing space apart
(01:08):
like a bubble, but it had always been there, and
over time the Big Bang has won really kind of clearly.
That seems to work. Then you go back to the
late nineteen nineties and there was this discovery of something
called dark energy tied to the fact that the universe
is getting bigger more quickly than it should be essentially,
and this is why obvious scientists Brian Schmidt got a
(01:31):
Nobel Prize along with a few other people for discovering this. Now,
that has always suggested that the universe would expand forever
and an accelerating space and it would die not with
a bang but a whimper, would just get kind of
more spread out. But these new results, which include observations
by Queensland scientists, it should be said, okay, suggests that
(01:54):
that dark energy is constant across time, but it's actually changing.
And if dark enage is changing, that means that the
predictions the universe lets band forever might not be correct.
And instead there's a scenario which is what the scientists
are publishing, which they'd have the universe eventually stretch, shreatk, stretch,
and then spring back and collapse really quickly like an
(02:16):
elastic band, like an elastic band, And that's the analogy
people are using. And so the idea here would be
that the universe would live thirty to forty billion years,
of which it spent about seventy five percent of that
time expanding. Eventually that expansion would stop speeding up, slow down, turnaround,
and everything will be pulled back in and you get
(02:37):
this massive, big crunch, which is like the big banging reverse.
Speaker 1 (02:40):
Right.
Speaker 2 (02:41):
Everything gets squashed back into a smaller space, Everything gets
infinitely hot, and everything ends at a finite time rather
than expanding forever.
Speaker 1 (02:50):
Wow, John Dy, that just blows my mind. How will
this affect climate change?
Speaker 2 (02:55):
Unfortunately, it's a very very different timescale. So this isn't
like the Golden Panacea to get us out of needing
solar panels.
Speaker 3 (03:07):
Right every billion years away?
Speaker 2 (03:10):
Is it?
Speaker 1 (03:10):
Yeah, we have to worry about it. Put it in
our calendar.
Speaker 2 (03:13):
It depends. I mean, the best estimate in this paper
is that this will happen in about twenty billion years time,
so again, nothing to worry about, but there's huge uncertainties.
But what I love about this is that it's not
just pure speculation with no predictions. What makes us really
good science is that it's a possible future. This is
(03:33):
one where the universe could play out but there are
tests that are coming in the years to come that
should either support this or knock it over. And that's
what makes really good science. We're really pushing the boundaries
of what we know and what we don't know. And
if you come up with an idea like this, you
needed to make predictions. If this sery is true, then
in the coming years, we'll see this thing. And that's
(03:55):
what this works doing. It's saying in the coming years,
we've got better observations coming. They'll tell us yes or no,
one way or the other. So that's really exciting.
Speaker 3 (04:03):
What do you think, John Ty?
Speaker 2 (04:07):
Honestly, this is enough outside my field that it makes
my head hurt pretty much, such it makes your there
as well. It does. But it kind of comes to
human philosophy thing. Is it scarier to think the universe
will go on absolutely forever until it dies a cold
death of emptiness, or is it better to think that
the universe will rewind and collapse back in and maybe
(04:29):
that will then lead to one of the big bangs.
That's something people talking about the Big Crunch in the
past have speculated that you get this infinitely cyclical universe
where you get a big bang, a universe happens, we
have our chats, the radio happens, all the rest of it.
Then it collapses, and as Douglas Adams says, someone builds
a restaurant at the end of the universe and you
(04:50):
get to watch a g mab GiB whether which is
together again, and then it all happens again.
Speaker 1 (04:57):
Okay, all right, Well Johnny Horner, always amazing, always yeah,
thank you, thank.
Speaker 2 (05:02):
You, pleasure, thank you for having me.
Speaker 1 (05:05):
He's a resident astrophysicist money, he knows what he's talking about.
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