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2005-03-09 08:05:00

Arizona's Jonathan Lunine presented a lecture entitled "Titan: A Personal View after Cassini's first six months in Saturn orbit" at a NASA Director's Seminar on January 24, 2005. Lunine discusses the question of missing methane in an edited transcript of Part 2. Astrobiology Magazine -- "How much methane is really in the surface and atmosphere of Titan today? How much has been there in the history of Titan?Methane is a carbon atom surrounded by four hydrogen atoms, and it can be broken apart...

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2005-01-20 07:46:33

Interview with Toby Owens, Part II Astrobiology Magazine -- University of Hawaii astronomer Toby Owens spoke with Astrobiology Magazine shortly after the successful Huygens mission had completed. In this part of the interview, Owens talks about the significance of methane in Titan's atmosphere. ----- Astrobiology Magazine (AM): You said that one thing that was particularly intriguing about Titan was its thick nitrogen-methane atmosphere. Do you think that the data that Huygens has collected...

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2005-01-20 07:35:00

Interview with Toby Owens, Part III AM -- University of Hawaii astronomer Toby Owens spoke with Astrobiology Magazine shortly after the successful Huygens mission had completed. In this part of the interview, Owens talks about the possibility that there is life on Titan. ----- Astrobiology Magazine (AM): The Cassini-Huygens mission was planned before astrobiology officially existed. Toby Owens (TO): Yes, that's right. AM: Did people at that time think that Titan might be a world where life...

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2004-12-16 07:50:00

The limits to life have consistently listed carbon-based organisms as central. While methane-consuming microbes are still carbon-based, they do offer novel ways to extract energy even without light or oxygen. Their role in our solar system is a subject of fruitful speculation. Astrobiology Magazine -- A team of University of Minnesota scientists has discovered how iron- and chromium-rich rocks can generate natural gas (methane) and related hydrocarbons when reacted with superheated fluids...


Word of the Day
tessitura
  • The prevailing range of a vocal or instrumental part, within which most of the tones lie.
This word is Italian in origin and comes from the Latin 'textura,' web, structure.