![](https://webarchive.library.unt.edu/eot2008/20090305063800im_/http://astrobiology.nasa.gov/img/_placehold/placehold-ask.jpg)
![Ask an Astrobiologist](https://webarchive.library.unt.edu/eot2008/20090305063800im_/http://astrobiology.nasa.gov/img/text/ask-an-astrobiologist.gif)
"Why is Mars considered to be the most likely candidate for life elsewhere in the solar system, and not Europa?"
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Alien Safari Part 3: Technology Worlds
At the most recent NASA Astrobiology Science Conference, a panel of scientists talked about planets where alien life might be found. In the third segment of this series, Jill Tarter describes different kinds of Technology Worlds.
Source: [Astrobiology Magazine]
![Recent Articles](https://webarchive.library.unt.edu/eot2008/20090305063800im_/http://astrobiology.nasa.gov/img/text/hd_recent_mb.gif)
- Emerging Topics in Biogeochemical Cycles (ETBC)
- Finding Earth’s Twin: No Easy Task
- Earthscope – Opportunities for Interdisciplinary Research
- Kepler's Search for "Alien Earths" Covered by CNN
- Evolution of the Modern Nitrogen Cycle
- Alien Safari Part 4: Countdown to Alien Life
- Cycling Nitrogen
- Unlocking the Combination
- Assembling the Tree of Life
- Alien Safari Part 3: Technology Worlds