Harvard scientist on his hunt for alien life
Can we build a scientific picture of what an alien life form might actually look like?
This is the task that Professor Dimitar Sasselov has set himself.
He heads a team called the 'Origins of Life' at Harvard University.
He talked to BBC News about how how scientists can begin to paint a picture of the alien, one perhaps quite different to Hollywood's version.
Library footage courtesy of Nasa
07 Nov 2011
- From the section Technology