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The night sky with it’s billions and billions of stars has gripped our imaginations for all time. Yet as far as we know, through out this vast universe we are alone. Could there be out in the cosmos other worlds teeming with life? Other civilizations just like ours? All over the planet highly intelligent, highly trained scientists have come to one Earth shattering conclusion. They are convinced that life exists beyond the Earth. But proving that has not been easy. Today armed with new technology science is searching for proof of another life supporting planet A Second Earth.
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In the last in the series Professor Jim Al-Khalili explores how studying the atom forced us to rethink the nature of reality itself. He discovers that there might be parallel universes in which different versions of us exist, finds out that empty space isn’t empty at all, and investigates the differences in our perception of the world in the universe and the reality
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There was a time, not so long ago, when science seemed to understand how the universe worked. Everything us, the Earth, the stars and even exotic-sounding supernovae was made of atoms which were all created at time-zero: the Big Bang. In between the atoms was nothing, a void: quite literally, ‘space’. But recently things have started to unravel. There is, it seems, a lot more to the universe than meets the eye. According to the best estimates, we only really know what about 4% of it is made of. But if only 4% is made of atoms, what about the rest? The rest is made of mysterious entities about which very little is understood, with equally mysterious names: dark matter and dark energy.
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