The Universe Astrobiology (2007– ) HD online

Scientists speculate on how life originated on earth based on the range of conditions where life survives today and the conditions that existed on the early earth. They then look for those conditions, past or present, that may exist on other planets or moons.

Episode cast overview:
	Erik Thompson	-	Himself - Narrator (voice)
	Seth Shostak	-	Himself - Senior Astronomer, SETI Institute
	David Grinspoon	-	Himself - Astrobiologist, Denver Museum of Nature & Science
	Abigail Allwood	-	Herself - Geologist, NASA / Jet Propulsion Laboratory
	Chris McKay	-	Himself - Astrobiologist, NASA Ames Research Center
	Adrian Brown	-	Himself - Astrobiologist, SETI Institute
	Jennifer Heldmann	-	Herself - Research Scientist, NASA / Jet Propulsion Laboratory
	Geoff Marcy	-	Himself - Astrobioloist, Univ. of California Berkeley
	Lee Bebout	-	Herself - Astrochemist, NASA Ames Research Center