TV What We Still Don't Know - Season 1 Episode 1 : Are We Alone? What We Still Don't Know - Season 1 Episode 1 : Are We Alone? /10 by 0 users Sir Martin explores the possibility that life exists on planets beyond our own. He unveils an unsettling scientific debate that has startling consequences for us Earthlings. Do you believe in aliens? If not, a quick glance through these pages might change your mind! Details Casts Posters Images Title What We Still Don't Know - Season 1 Episode 1 : Are We Alone? Alternative Titles First Air Date 2004-01-01 Last Air Date 2004-01-01 Number of Episodes 3 Number of Seasons 1 Genres Documentary, Networks Channel 4, Casts Martin Rees, David Malone Plot Keywords , Self - Host Martin Rees Self-host David Malone Episodes List What We Still Don't Know Season 1 :Episode 1 Are We Alone? Are We Alone? 2004-01-01 Thought provoking Channel 4 series in which Sir Martin Rees investigates the great unanswered questions of science. What We Still Don't Know Season 1 :Episode 2 Why Are We Here? Why Are We Here? 2004-01-01 Thought provoking Channel 4 series in which Sir Martin Rees investigates the great unanswered questions of science. What We Still Don't Know Season 1 :Episode 3 Are We Real? Are We Real? 2004-01-01 Thought provoking Channel 4 series in which Sir Martin Rees investigates the great unanswered questions of science.