‘Galaxy’ Radio –NASA Astrobiology: Saturn’s Enceladus & the Search for Life in the Solar System





Scientists often search for the answer to the origins of life on Earth on other planets or moons in our solar system. If we want to see whether our theories are right, we need to find another example of life somewhere.

The search has taken us to some strange places seemingly frozen in time that give us hints to what Earth looked like billions of years ago when life first appeared in the geologic record: places like Mars that show evidence of fossil oceans, and places like Saturn’s moon, Enceladus, that show evidence of liquid water oceans containing organic molecules hidden under an icy crust.

NASA astrobiologist Chris McKay has been a member of missions that sent spacecraft to these and other places in search of that elusive other example of life in the universe. He recently sat down with producer Miles Traer to discuss the best current theories for the origin of life on Earth, why Antarctica is a lot like one of Saturn’s moons, the challenges of collecting data from other planets, and the reasons we’re captivated by the question, “Are we alone in the universe?”

Daily Galaxy Radio seeks out the world's best podcasts and radio programs on science and space exploration.


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