[Home]   [Full version]  

No oceans on Titan, say researchers

Aug 04 ,Space & Earth science


There are no oceans on Saturn's moon Titan and flat areas of the satellite appear to be solid and dry, U.S. astronomers said.

The moon's atmosphere, containing methane and ethane, had prompted speculation that lakes or oceans of these chemicals might be found on Titan, reported the BBC Thursday.

"We infer mechanisms that produce very flat solid surfaces, involving a substance that was liquid in the past but is not in liquid form at the locations we studied," Robert West, of the Jet Propulsion Laboratory, in Pasadena, Calif., wrote in Nature.

The observations were focused on Titan's southern hemisphere, however, the northern region may contain pools of liquid organic material, the researchers said.

Copyright 2005 by United Press International

Related stories:

Cassini instrument confirms liquid surface lake on Titan
Scientists have confirmed that at least one body in our solar system, other than Earth, has a surface liquid lake. Using an instrument on NASA's Cassini orbiter, they discovered that a lake-like feature in the south polar region of Saturn's moon, Titan, is truly wet. The lake is about 235 kilometers, or 150 miles, long.
Methane drizzle on Saturn's moon Titan
Noted for its bizarre hydrocarbon lakes and frozen methane clouds, Saturn's largest moon, Titan, also appears to have widespread drizzles of methane, according to a team of astronomers at the University of California, Berkeley.
Titan's icy climate mimics Earth's tropics
If space travelers ever visit Saturn's largest moon, they will find a tropical world where temperatures plunge to minus 274 degrees Fahrenheit, methane rains from the sky and dunes of ice or tar cover the planet's most arid regions. These conditions reflect a cold mirror image of Earth's tropical climate, according to scientists at the University of Chicago.
New imaging detectors could take snapshots from deep space
Snapshots from space may someday confirm the presence of lakes and oceans on Europa—one of Jupiter’s moons—and on other planetary bodies. Imaging detectors that capture information from every wavelength in the electromagnetic spectrum could detect the presence of liquid methane or hydrocarbons, the stew that just might sustain microbial life forms.
Life elsewhere in Solar System could be different from life as we know it
The search for life elsewhere in the solar system and beyond should include efforts to detect what scientists sometimes refer to as "weird" life -- that is, life with an alternative biochemistry to that of life on Earth -- says a new report from the National Research Council.
Cassini Images Seas on Saturn's Moon Titan
Instruments on NASA's Cassini spacecraft have found evidence for seas, likely filled with liquid methane or ethane, in the high northern latitudes of Saturn's moon Titan. One such feature is larger than any of the Great Lakes of North America and is about the same size as several seas on Earth.
Ocean Planets on the Brink of Detection
Imagine a world with no land at all, merely the impenetrable depths of a seething ocean. Models of planet formation predict the existence of such worlds, even though our own solar system has none. Indeed, their formation should actually be rather common — and new satellites may soon detect them around other stars.
Earth: The Lone Pale Blue Dot?
A recent photo from the Cassini spacecraft shows the mighty planet Saturn, and if you look very closely between its wing-like rings, a faint pinprick of light. That tiny dot is Earth bustling with life as we know it. The image is the second ever taken of our world from deep space. The first, captured by the Voyager spacecraft in 1990, stunned many people, including the famous astronomer Carl Sagan who called our seemingly miniscule planet a "pale blue dot" and "the only home we've ever known."

News discussion:

Space & Earth science news

[Home]   [Full version]