rjxie 发表于 2005-1-26 21:59

土卫六上的河床和湖床照片！

Riverbeds and Lakebeds Discovered on Saturn's Titan
Credit: ESA, NASA, Descent Imager/Spectral Radiometer Team (LPL)
Explanation: Methane rain, evaporating lakes, flowing rivers, and water ice-volcanoes all likely exist on Saturn's moon Titan, according to preliminary analyses of recent images taken by the successful Huygens lander. A snaking and branching riverbed is identified with the dark channel near the top of the above image, while a dark lakebed is identified across the image bottom. Both the riverbed and lakebed were thought to be dry at the time the image was taken but contained a flowing liquid - likely methane - in the recent past. Titan's surface was found to appear strangely similar to Earth even though it is so cold that methane flows and water freezes into rock-hard ice. Although the Huygens probe has now run out of power, the images it returned will likely be studied for decades to come. The Cassini mothership is scheduled to continue to orbit Saturn and return images for several more years.

赵垒 发表于 2005-1-27 16:42

^^  :idea:  :arrow:

筱_安 发表于 2005-1-27 23:06

:mrgreen:  :mrgreen:  :mrgreen:  :mrgreen:
啥泥?

火星鸟 发表于 2005-1-30 21:31

这是有生命的预兆。

筱_安 发表于 2005-1-30 23:36

呵呵,不过我可不要呆在那个"有生命"的地方^^
当然啦,等以后我长大了就难讲了 :mrgreen:  :mrgreen:  :mrgreen:  :mrgreen:  :mrgreen:  :mrgreen:  :mrgreen:  :mrgreen:  :mrgreen:  :mrgreen:  :mrgreen:
就是去之前得先提两筒水来着...
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