Skip Channel4 main Navigation

|Powered By Google


Stephen Hawking: Master of the Universe header image
Physics in Depth

Theory of Everything

Theory of Everything

Investigating the most promising scientific explanation of how the universe works – string theory. Take a journey from the incomprehensibly large to the ridiculously small.


What We Still Don't Know

What We Still Don't Know

Are we alone? Why are we here? Are we real? Astronomer Royal Sir Martin Rees takes a look at some of the big questions from our universe.


Space FAQs

Space FAQs

Black holes? Asteroid Collision? Some select but burning questions on space and universe are answred here.


The Worlds First Time Machine

The World's First Time Machine

If you thought the inventors of Dr Who were off the wall, think again. Even Einstein believed in time travel. Find out what the physicists say about the idea.


E=mc2

E=mc2

Einstein's world-famous equation was one part genius and one part teamwork. The endeavours of scientists from around the world helped the great man reach his conclusion.



Master of the Universe: Video Clips
Watch Master of the Universe on 4oD
String Theory and how the universe works
Are we alone? Why are we here? Are we real?
Discover the truth behind time travel
Black holes, asteroid collision and much more...