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Scientists are particularly interested in Saturn's moon Titan because it's one of the few known moons with its own dense atmosphere. Titan's atmosphere is also thought to be very similar to what Earth's atmosphere was a long time ago. By learning about Titan, we'll learn about our own planet.
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This site is no longer maintained. It contains historical data.

For current information about the NASA Astrobiology Program, please visit http://astrobiology.nasa.gov/


2001-04-18 | SCIENCE
Orphan 'planet' findings challenged by new model

Planet-sized objects floating freely among the stars may not be planets at all. According to Alan Boss of the Carnegie Institution of Washington, the objects may have formed the same way that stars form. They may be extremely small brown dwarfs—star-like objects too small to ignite.


More on this story Full text of original item from Space.com, Apr 18, 2001

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May 09, 2000 | SCIENCE
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Jan 17, 2000 | SCIENCE
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Jan 03, 2000 | SCIENCE, TECHNOLOGIES
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Jan 02, 2000 | SCIENCE
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Dec 16, 1999 | SCIENCE
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Dec 08, 1999 | SCIENCE
New theory of planet formation: habitable planets less likely
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Nov 29, 1999 | SCIENCE
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Oct 24, 1999 | SCIENCE
Do Stars Eat Their Young?
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Sep 23, 1999 | SCIENCE
Possible Earth-like planet found in habitable zone
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Sep 13, 1999 | SCIENCE
Scientists size up huge distant planet
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Aug 25, 1999 | MISSIONS, TECHNOLOGIES
NASA chooses partner for first interferometer in space
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Aug 21, 1999 | SCIENCE
Planet orbits two stars
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Aug 17, 1999 | SCIENCE
Planets may alter orbits over time
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Jan 10, 1999 | SCIENCE
Nearby stars come under greater scrutiny
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The preceding news links are provided as a public service for interested users. The views and claims expressed in external internet sites are not necessarily those of NASA.

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