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Once Before Time - A Whole Story of the Universe-logo

Once Before Time - A Whole Story of the Universe

Martin Bojowald

In 2000, Martin Bojowald, then a twenty-seven-year-old post-doc at Pennsylvania State University, used a relatively new theory called loop quantum gravity-a cunning combination of Einstein's theory of gravity with quantum mechanics-to create a simple model of the universe. Loop quantum cosmology was born, and with it, a theory that managed to do something even Einstein's general theory of relativity had failed to do-illuminate the very birth of the universe. Ever since, loop quantum cosmology, or LQC, has been tantalizing physicists with the idea that our universe could conceivably have emerged from the collapse of a previous one. Now the theory is poised to formulate hypotheses we can actually test. If they are verified, the big bang will give way to the big bounce. Instead of a universe that emerged from a point of infinite density, we will have one that recycles, possibly through an eternal series of expansions and contractions, with no beginning and no end. Bojowald's major realization was that unlike general relativity, the physics of LQC do not break down at the big bang. The greatest mystery surrounding the origin of the universe is what cosmologists call the big bang "singularity"-the point at the beginning of the universe, prior to the existence of space and time, when gravity, along with the temperature and density of the universe, becomes infinite. The equations of general relativity can't cope with such infinities, and as a result big bang theory has never been able to give any explanation for the initial condition of our universe, succeeding only in describing and explaining the evolution of the universe from that instant onward. Bojowald's theory takes us right up to the first moment of the universe-and then back, even before the big bang itself. From the Hardcover edition.

In 2000, Martin Bojowald, then a twenty-seven-year-old post-doc at Pennsylvania State University, used a relatively new theory called loop quantum gravity-a cunning combination of Einstein's theory of gravity with quantum mechanics-to create a simple model of the universe. Loop quantum cosmology was born, and with it, a theory that managed to do something even Einstein's general theory of relativity had failed to do-illuminate the very birth of the universe. Ever since, loop quantum cosmology, or LQC, has been tantalizing physicists with the idea that our universe could conceivably have emerged from the collapse of a previous one. Now the theory is poised to formulate hypotheses we can actually test. If they are verified, the big bang will give way to the big bounce. Instead of a universe that emerged from a point of infinite density, we will have one that recycles, possibly through an eternal series of expansions and contractions, with no beginning and no end. Bojowald's major realization was that unlike general relativity, the physics of LQC do not break down at the big bang. The greatest mystery surrounding the origin of the universe is what cosmologists call the big bang "singularity"-the point at the beginning of the universe, prior to the existence of space and time, when gravity, along with the temperature and density of the universe, becomes infinite. The equations of general relativity can't cope with such infinities, and as a result big bang theory has never been able to give any explanation for the initial condition of our universe, succeeding only in describing and explaining the evolution of the universe from that instant onward. Bojowald's theory takes us right up to the first moment of the universe-and then back, even before the big bang itself. From the Hardcover edition.
More Information

Description:

In 2000, Martin Bojowald, then a twenty-seven-year-old post-doc at Pennsylvania State University, used a relatively new theory called loop quantum gravity-a cunning combination of Einstein's theory of gravity with quantum mechanics-to create a simple model of the universe. Loop quantum cosmology was born, and with it, a theory that managed to do something even Einstein's general theory of relativity had failed to do-illuminate the very birth of the universe. Ever since, loop quantum cosmology, or LQC, has been tantalizing physicists with the idea that our universe could conceivably have emerged from the collapse of a previous one. Now the theory is poised to formulate hypotheses we can actually test. If they are verified, the big bang will give way to the big bounce. Instead of a universe that emerged from a point of infinite density, we will have one that recycles, possibly through an eternal series of expansions and contractions, with no beginning and no end. Bojowald's major realization was that unlike general relativity, the physics of LQC do not break down at the big bang. The greatest mystery surrounding the origin of the universe is what cosmologists call the big bang "singularity"-the point at the beginning of the universe, prior to the existence of space and time, when gravity, along with the temperature and density of the universe, becomes infinite. The equations of general relativity can't cope with such infinities, and as a result big bang theory has never been able to give any explanation for the initial condition of our universe, succeeding only in describing and explaining the evolution of the universe from that instant onward. Bojowald's theory takes us right up to the first moment of the universe-and then back, even before the big bang itself. From the Hardcover edition.

Language:

English

Narrators:

Jonathan Cowley

Length:

12h 26m


Chapters

Chapter 1
Chapter 1

00:18


Chapter 2
Chapter 2

07:45


Chapter 3
Chapter 3

05:43


Chapter 4
Chapter 4

07:46


Chapter 5
Chapter 5

07:58


Chapter 6
Chapter 6

07:31


Chapter 7
Chapter 7

08:08


Chapter 8
Chapter 8

07:25


Chapter 9
Chapter 9

08:19


Chapter 10
Chapter 10

05:58


Chapter 11
Chapter 11

06:47


Chapter 12
Chapter 12

07:37


Chapter 13
Chapter 13

07:46


Chapter 14
Chapter 14

08:01


Chapter 15
Chapter 15

08:27


Chapter 16
Chapter 16

05:44


Chapter 17
Chapter 17

07:39


Chapter 18
Chapter 18

07:57


Chapter 19
Chapter 19

05:52


Chapter 20
Chapter 20

08:02


Chapter 21
Chapter 21

06:37


Chapter 22
Chapter 22

07:06


Chapter 23
Chapter 23

07:28


Chapter 24
Chapter 24

07:47


Chapter 25
Chapter 25

05:19


Chapter 26
Chapter 26

07:29


Chapter 27
Chapter 27

07:14


Chapter 28
Chapter 28

06:03


Chapter 29
Chapter 29

07:13


Chapter 30
Chapter 30

07:57


Chapter 31
Chapter 31

09:18


Chapter 32
Chapter 32

07:41


Chapter 33
Chapter 33

07:43


Chapter 34
Chapter 34

07:30


Chapter 35
Chapter 35

08:30


Chapter 36
Chapter 36

07:13


Chapter 37
Chapter 37

08:32


Chapter 38
Chapter 38

08:36


Chapter 39
Chapter 39

07:54


Chapter 40
Chapter 40

07:15


Chapter 41
Chapter 41

08:00


Chapter 42
Chapter 42

07:56


Chapter 43
Chapter 43

08:02


Chapter 44
Chapter 44

07:46


Chapter 45
Chapter 45

07:54


Chapter 46
Chapter 46

07:23


Chapter 47
Chapter 47

04:22


Chapter 48
Chapter 48

07:17


Chapter 49
Chapter 49

08:08


Chapter 50
Chapter 50

05:18


Chapter 51
Chapter 51

06:03


Chapter 52
Chapter 52

07:08


Chapter 53
Chapter 53

08:24


Chapter 54
Chapter 54

07:53


Chapter 55
Chapter 55

07:42


Chapter 56
Chapter 56

07:35


Chapter 57
Chapter 57

07:33


Chapter 58
Chapter 58

07:19


Chapter 59
Chapter 59

07:39


Chapter 60
Chapter 60

07:24


Chapter 61
Chapter 61

08:54


Chapter 62
Chapter 62

03:25


Chapter 63
Chapter 63

07:58


Chapter 64
Chapter 64

07:48


Chapter 65
Chapter 65

07:22


Chapter 66
Chapter 66

09:15


Chapter 67
Chapter 67

07:41


Chapter 68
Chapter 68

07:59


Chapter 69
Chapter 69

07:29


Chapter 70
Chapter 70

07:44


Chapter 71
Chapter 71

09:28


Chapter 72
Chapter 72

07:40


Chapter 73
Chapter 73

07:39


Chapter 74
Chapter 74

07:31


Chapter 75
Chapter 75

08:08


Chapter 76
Chapter 76

08:01


Chapter 77
Chapter 77

04:27


Chapter 78
Chapter 78

06:55


Chapter 79
Chapter 79

06:23


Chapter 80
Chapter 80

07:13


Chapter 81
Chapter 81

06:42


Chapter 82
Chapter 82

05:40


Chapter 83
Chapter 83

08:02


Chapter 84
Chapter 84

09:30


Chapter 85
Chapter 85

04:28


Chapter 86
Chapter 86

06:54


Chapter 87
Chapter 87

07:11


Chapter 88
Chapter 88

07:42


Chapter 89
Chapter 89

07:12


Chapter 90
Chapter 90

05:24


Chapter 91
Chapter 91

05:04


Chapter 92
Chapter 92

08:54


Chapter 93
Chapter 93

07:24


Chapter 94
Chapter 94

09:03


Chapter 95
Chapter 95

08:01


Chapter 96
Chapter 96

06:15


Chapter 97
Chapter 97

05:08


Chapter 98
Chapter 98

06:35


Chapter 99
Chapter 99

05:27


Chapter 100
Chapter 100

04:54


Chapter 101
Chapter 101

07:28


Chapter 102
Chapter 102

07:38


Chapter 103
Chapter 103

08:00


Chapter 104
Chapter 104

01:04