Your friend saw this resource on bethinking.org and thought you should see it:
Science, Religion and the Search for Extraterrestrial Intelligence
Would contact with extraterrestrial beings create a crisis of faith? Chris Oldfield reviews 'Science, Religion and the Search for Extraterrestrial Intelligence' by David Wilkinson.
See the full resource online by visiting bethinking.org:
https://www.bethinking.org/human-life/science-and-extraterrestrials
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bethinking.org is a collection of resources which aims to make sense of the big questions of life about God, Jesus and Christianity.