|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
• |
Largest
moon of Saturn
|
|
|
• |
Has
thick atmosphere
|
|
|
|
– |
Pressure
~ 1 earth
|
|
|
atmosphere
|
|
|
|
– |
Mostly N2, some CH4
|
|
|
|
|
|
– |
Gas
held because of low T
|
|
|
• |
UV acting on CH4 smog
|
|
|
|
|
– |
Ethane
produced – Lakes?
|
|
|
|
– |
Can
“see” surface only in IR
|
|
|
• |
Cassini
will drop probe in
|
|
|
Fall
2004
|
|
|
• |
“Code of the Lifemaker” by
|
|
James P. Hogan, good sf
|
|
|
|