Astrobiology is really just the study of life in space and on earth so it only really relates to Biology
Why is it importnt to us?
What does it have to do with me?
When did it start?
"Encountering Life in the Universe: Ethical Foundations and Social Implications of Astrobiology." Encountering Life in the Universe: Ethical Foundations and Social Implications of Astrobiology. The University of Arizona, 2013. Web. 08 Sept. 2015.