Origins

Where are the Aliens? (1x3)

Date de diffusion: Jan 01, 2004

In Hour Three, "Origins: Where are the Aliens?," Tyson explores such provocative questions as: would "ETs" resemble us or the creatures of science fiction? Are there "aliens" already amongst us on Planet Earth-brainy creatures whose intelligence is very different from our own? And are planets on which life can flourish rare or common in our universe?