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Hour Two: Early Universe / Astrobiology Update Bacteria live in some of the harshest environments known, from Antarctic ice to deep sea vents. Now some researchers believe they may exist on Mars, and that previously unrecognized signs in data from the Viking lander missions may reveal their presence. We'll talk about that idea, and about the controversial theory that bacteria from elsewhere in the universe may be found floating in the Earth's upper atmosphere. Is there life beyond Earth? Join Ira Flatow as the talk turns to the possibility of extraterrestrial microbes. Plus, we'll take a look at the dark days of the universe, and talk about new data that reveal the state of the universe at a time before there were stars. Call in with your comments and questions at 1-800-989-8255, and share your opinions online in our Listeners' Lounge (registration required).
Guests: Chandra Wickramasinghe Gilbert Levin Jay Melosh Related Links:
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Host/Executive Producer/Editor of Science Friday: Ira Flatow Senior Producer of Science Friday: Karin Vergoth Executive web producer: Ira Flatow Web producer: Charles Bergquist
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