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Time and entropy
Time and entropy

Duration: 05:16

Brian Cox explains the concept of entropy and the arrow of time.

 
How are elements made?
How are elements made?

Duration: 07:41

Brian Cox explains how the elements are made.

 
Why are black holes invisible?
Why are black holes invisible?

Duration: 03:47

Brian Cox explains why black holes cannot be seen.

 
Escaping from gravity
Escaping from gravity

Duration: 03:43

Brian Cox explains the effects changes in gravity have on the body.

 
Gravity on different worlds
Gravity on different worlds

Duration: 06:32

Brian Cox uses a spinning centrifuge to create gravity as it would be experienced on other planets. He demonstrates how difficult it would be to live in conditions of higher gravitational force.

 
The Big Bang
The Big Bang

Duration: 04:30

Brian Cox explains why some stars look red and how this help prove that the universe is expanding?

 
Measuring the speed of light
Measuring the speed of light

Duration: 03:42

Brian Cox explains how scientists first measured the speed of light.

 
Types of light in the universe
Types of light in the universe

Duration: 03:29

Brian Cox describes different types of light and how we can detect the oldest light in the universe.

 
Looking back in time
Looking back in time

Duration: 06:06

Brian Cox explains the way light from stars and galaxies takes time to travel to Earth. Looking at distant objects sees them as they were; the further away the further back in time.

 
The death of stars
The death of stars

Duration: 04:35

Brian Cox explains how stars die.

 
Spectroscopy and how we know what stars are made of
Spectroscopy and how we know what stars are made of

Duration: 06:08

Brian Cox explains how we can analyse starlight using spectroscopy and prove the universe is made from the same 92 chemical elements as are found on earth. This can be proved by analysing starlight using spectroscopy.

 
Evolution of complex life
Evolution of complex life

Duration: 03;37

Brian Cox explains the theory that the development of the eye by a predator in the Cambrian era may have started an evolutionary explosion and the development of complex life forms.

 
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