![Spacer](https://webarchive.library.unt.edu/eot2008/20080916093713im_/http://astrobiology.arc.nasa.gov/common/spacer.gif) |
![ASTROBIOLOGY FACT?](https://webarchive.library.unt.edu/eot2008/20080916093713im_/http://astrobiology.arc.nasa.gov/images/titles/title_ab_fact.gif) |
![spacer](https://webarchive.library.unt.edu/eot2008/20080916093713im_/http://astrobiology.arc.nasa.gov/common/spacer.gif) |
![spacer](https://webarchive.library.unt.edu/eot2008/20080916093713im_/http://astrobiology.arc.nasa.gov/common/spacer.gif) |
![spacer](https://webarchive.library.unt.edu/eot2008/20080916093713im_/http://astrobiology.arc.nasa.gov/common/spacer.gif)
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.
![spacer](https://webarchive.library.unt.edu/eot2008/20080916093713im_/http://astrobiology.arc.nasa.gov/common/spacer.gif) |
![spacer](https://webarchive.library.unt.edu/eot2008/20080916093713im_/http://astrobiology.arc.nasa.gov/common/spacer.gif) |
|
![Spacer](https://webarchive.library.unt.edu/eot2008/20080916093713im_/http://astrobiology.arc.nasa.gov/common/spacer.gif) |
|