The discovery of exo-planets and of Earth twins will be described, with a review of attempts to estimate the probability of finding life in the universe - for example how many stars do we need to survey to find suitable planets? How much time is needed to generate life?

The transcript and downloadable versions of the lecture are available from the Gresham College website: http://www.gresham.ac.uk/lectures-and-events/how-common-is-life-in-the-universe

Gresham College has been giving free public lectures since 1597. This tradition continues today with all of our five or so public lectures a week being made available for free download from our website. There are currently over 1,900 lectures free to access or download from the website.
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