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There are two problems with the standard big bang model
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Brian Cox: Life Of A Universe

There are two problemswith the standard big bang model

There are two problems
with the standard big bang model

Full Transcript

00:00:01.000 --> 00:00:05.004
There are two problems with the standard big bang model.
Duration
5 seconds
Views
32
Timestamp in Movie
00:11:22
Uploaded
Jul 09, 2025
Season
1
Episode
2
Genres
documentary

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Movie Summary

Professor Brian Cox on tour in Australia talks about the life of our universe to scientists and to space-loving audiences.
S01 • E02 They're called the horizon problem and the flatness problem. - Brian Cox: Life Of A Universe 00:04
They're called the horizon problem and the flatness pro...
S01 • E02 You can picture the horizon problem as follows. - Brian Cox: Life Of A Universe 00:06
You can picture the horizon problem as follows.
S01 • E02 If you look at the universe as far as the eye can see in that direction, - Brian Cox: Life Of A Universe 00:22
If you look at the universe as far as the eye can see in tha...
S01 • E02 But those two points on the sky are separated today - Brian Cox: Life Of A Universe 00:09
But those two points on the sky are separated today
S01 • E02 That means if you've got a universe that's been expanding sedately - Brian Cox: Life Of A Universe 00:12
That means if you've got a universe that's been ex...
S01 • E02 Which means there's no explanation - Brian Cox: Life Of A Universe 00:07
Which means there's no explanation
S01 • E02 When you look at our universe, it appears to be completely flat. - Brian Cox: Life Of A Universe 00:06
When you look at our universe, it appears to be completely f...
S01 • E02 Which seems very strange, - Brian Cox: Life Of A Universe 00:10
Which seems very strange,
S01 • E02 A solution can be found in a theory known as inflation, - Brian Cox: Life Of A Universe 00:17
A solution can be found in a theory known as inflation,
S01 • E02 By "fast", I mean that it was doubling in size - Brian Cox: Life Of A Universe 00:08
By "fast", I mean that it was doubling in size
S01 • E02 That's one ten-million-million- million-million-million-millionths - Brian Cox: Life Of A Universe 00:07
That's one ten-million-million- million-million-million...
S01 • E02 Why does that solve the horizon and flatness problems? - Brian Cox: Life Of A Universe 00:05
Why does that solve the horizon and flatness problems?
S01 • E02 Well, first of all, it suggests the universe has to be extremely big - - Brian Cox: Life Of A Universe 00:10
Well, first of all, it suggests the universe has to be extre...
S01 • E02 This little piece of the Earth here looks flat, - Brian Cox: Life Of A Universe 00:07
This little piece of the Earth here looks flat,
S01 • E02 Why? Because it's very small compared to the size of the Earth. - Brian Cox: Life Of A Universe 00:06
Why? Because it's very small compared to the size of th...
S01 • E02 So it is, according to the theory of inflation, for our universe. - Brian Cox: Life Of A Universe 00:06
So it is, according to the theory of inflation, for our univ...
S01 • E02 It also solves our horizon problem, - Brian Cox: Life Of A Universe 00:12
It also solves our horizon problem,
S01 • E02 They could jiggle around and get to the same temperature, - Brian Cox: Life Of A Universe 00:06
They could jiggle around and get to the same temperature,
S01 • E02 It's mind-boggling, - Brian Cox: Life Of A Universe 00:15
It's mind-boggling,
S01 • E02 This theory called inflation - Brian Cox: Life Of A Universe 00:08
This theory called inflation