(Huygens) Spacecraft Landed in Mud on Saturn Moon

AP on Yahoo ^ | 1/18/05 | AP - FRankfurt

[NormsRevenge]

FRANKFURT, Germany - A European spacecraft landed in mud when it hit the surface of Titan, a scientist said Tuesday, revealing animated pictures of the final feet of its descent to the moon of Saturn.

The latest pictures underline beliefs that the Huygens probe landed near a large body of liquid on Friday when it ended a seven-year mission by the European Space Agency to the previously untouched moon.

Another series of photos showed how Titan's hazy atmosphere gave way to a more solid, but clearly varied surface as the spacecraft tumbled and spun toward its final resting place.

"There wasn't even a glitch at impact. That landing was a lot friendlier than we had anticipated," said Charles See, a scientist who has been studying the images.

Images taken on descent, from about 12 miles right down to the surface, suggest the presence of liquid, possibly flowing through channels or washing over larger areas, said Marty Tomasko of the Lunar and Planetary Laboratory at the University of Arizona in Tucson.

Titan is the first moon other than the Earth's to be explored. Scientists believe its atmosphere may be similar to that of the primordial Earth and studying it could provide clues to how life began.

Huygens was spun off from the Cassini mother ship on Dec. 24 before it began its 2 1/2-hour parachute descent on Friday, taking pictures and sampling the atmosphere before landing on Titan, where temperatures are estimated at 292 degrees below zero.

[joesnuffy]

poly alloy... liquid metal

[finnigan2]

I believe that at Titan's temperature, the only "flowing" going on is liquid methane. I also read somewhere that Saturn's huge mass exerts an enormous gravitational pull on it's moons, so perhaps the flowing rivers are due to the pressures on the methane which causes it to ebb and flow like earthly tides do.

[Colorado Doug]

While NASA's Cassini probe carried Huygens to the Saturn system, ESA had to manage the 2-1/2 hour descent to the surface - Huygens continued sending data for more than an hour after landing. "It's one of the harder missions one could conceive," says Dr. Betts. "It really shows that they're a major player."

A whole hour after we dropped them off! A major player indeed.

[Bones75]

"Mr. Sappenfield needs to learn some astronomy. Titan is not a moon of Saturn. It is a satellite of Saturn; a natural satellite, if one needs to make the distinction."

Of course it is a moon.

Any object orbiting a star (i.e. a natural satellite of that star) is called a Planet (obviously). Any object orbiting a planet itself, being a satellite of said planet, is called a Moon. The Earth has a moon, the name of which is "Luna". Most other planets have moons as well.

Titan is a moon of Saturn, being a natural satellite of Saturn makes it one.

Bones