Skip to comments.Cassini spots mini Nile River on Saturn moon
Posted on 12/12/2012 11:34:39 AM PST by LibWhacker
The international Cassini mission has spotted what appears to be a miniature extraterrestrial version of the Nile River: a river valley on Saturns moon Titan that stretches more than 400 km from its headwaters to a large sea.
It is the first time images have revealed a river system this vast and in such high resolution anywhere beyond Earth.
Scientists deduce that the river is filled with liquid because it appears dark along its entire extent in the high-resolution radar image, indicating a smooth surface.
Though there are some short, local meanders, the relative straightness of the river valley suggests it follows the trace of at least one fault, similar to other large rivers running into the southern margin of this same Titan sea, says Jani Radebaugh, a Cassini radar team associate at Brigham Young University, USA.
Such faults fractures in Titans bedrock may not imply plate tectonics, like on Earth, but still lead to the opening of basins and perhaps to the formation of the giant seas themselves.
Titan is the only other world we know of that has stable liquid on its surface. While Earths hydrologic cycle relies on water, Titans equivalent cycle involves hydrocarbons such as ethane and methane.
Images from Cassinis visible-light cameras in late 2010 revealed regions that darkened after recent rainfall.
Cassinis visual and infrared mapping spectrometer confirmed liquid ethane at a lake in Titans southern hemisphere known as Ontario Lacus in 2008.
This radar-imaged river by Cassini provides another fantastic snapshot of a world in motion, which was first hinted at from the images of channels and gullies seen by ESAs Huygens probe as it descended to the moons surface in 2005, says Nicolas Altobelli, ESAs Cassini Project Scientist.
The CassiniHuygens mission is a cooperative project of NASA, ESA and ASI, the Italian space agency. NASAs Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, manages the mission for NASAs Science Mission Directorate, Washington. The Cassini orbiter was designed, developed and assembled at JPL. The radar instrument was built by JPL and ASI, working with team members from the US and several European countries.
I wonder if there is an Arab Spring going on there as well?
Fracking gone wild ...
Well, at least when we get there we can have a good bath and do a little fishing..../sarc
“Well, at least when we get there we can have a good bath and do a little fishing..../sarc”
If we didn’t have to support 20 million baby mommas and their offspring we might already be there.
|· join · view topics · view or post blog · bookmark · post new topic · subscribe ·|
|Google news searches: exoplanet · exosolar · extrasolar ·|
Sounds like an endorsement to me ......................................... FRegards
I love Christmas ... gonzo
Thanks, pal ... FRegards
Disclaimer: Opinions posted on Free Republic are those of the individual posters and do not necessarily represent the opinion of Free Republic or its management. All materials posted herein are protected by copyright law and the exemption for fair use of copyrighted works.