Astrobiology, discovery, and societal impact

Introduction : when biospheres collide

Approaches

History

Discovery

Analogy

Critical issues

Can we transcend anthropocentrism?

Is human knowledge universal?

How can we envision impact?

Impact!

Astroculture : transforming our worldviews

Astroethics : interacting with alien life

Astropolicy : preparing for discovery

Summary and conclusions : at home in the biological (or postbiological)

Universe.