"Anthology of essays exploring attempts to understand life beyond Earth"--
Content Note
Alien life might already live among us / Samantha Rolfe -- Aliens may have already visited / Jasper Hamill -- Advanced civilizations have probably developed previously elsewhere in the universe / Lenor Sierra -- Most likely number of contactable alien civilisations is 36 / Nicola Davis -- The aliens we're looking for may already be dead / Tom Siegfried.