* Hawkings spent three years on the series
* Extraterrestrials "almost certain to exist"
* Gives his take on what aliens would look like
THEY aren't just any aliens - they are extraterrestrial life as only one of the universe's best brains could envisage them.
Stephen Hawking has taken advantage of the latest computer graphics to display his versions of alien life forms, based on hard science, for a new documentary series, Into the Universe.
The British theoretical physicist, trapped in a body paralysed by motor neurone disease, and author of the best seller A Brief History of Time, spent three years to finish the series, which airs this weekend on the Discovery Channel.
The 68-year-old suggests in the first episode that extraterrestrials are almost certain to exist.
He points out the universe has 100 billion galaxies, each with hundreds of millions of stars and
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