View Full Version : Underground Oceans Discovered on Titan

2008-Mar-20, 08:00 PM
With each flyby, NASA's Cassini spacecraft has been building up the case that there are lakes and seas of liquid hydrocarbons on the surface of Saturn's moon Titan. But now we get the stunning news that the planet might have vast oceans of water and ammonia underneath its surface as well.

More... (http://www.universetoday.com/2008/03/20/underground-oceans-discovered-on-titan/)

Disinfo Agent
2008-Mar-20, 08:28 PM
That's fantastic news, if it is confirmed!

2008-Mar-22, 03:10 PM
Wow! Another Europa...?

2008-May-12, 08:12 PM
On the other hand...

L'Observatoire de Paris: The mystery of Titan's rotation (http://www.obspm.fr/actual/nouvelle/may08/titan.en.shtml)

Cassini spacecraft has recently observed a slight super-synchronous rotation of Titan (+0.004%) and the authors interpret it as a signature of an internal ocean, that would dissociate the rotation of Titan's crust from this of the core, justified by the fact that the motion of the crust would be sensitive to the energy exchanges with the atmosphere.

Another explanation is being proposed by researchers of the University of Namur (Belgium), the University of Lille 1 and Paris Observatory (IMCCE). Following Benoît Noyelles, Anne Lemaître and Alain Vienne, there could be a dynamical forcing of the angle (the wobble) between Titan's rotation and pole axes, that could false the measurement of Titan's spin rate if these axes were considered as equal.

Cassini space mission has been extended for at least two years, so more accurate measurements would allow to confirm or refine these explanations.

2008-May-13, 03:59 AM
uh oh--everybody watch your back, literally! You may be ridden by a puppet master from Titan....

2008-Jun-02, 12:23 AM
I've just seen this on The Sky at Night, with Patrick Moore talking about the slight slippage of the surface features on Titan. That's incredible, if true. Like a super-fast continental drift. Presumably the crust is solid and rigid, but the liquid water layer beneath acts as a lubricant.
I've never heard abiut anything like this on Europa, which might be expected to rotate in a similar way.