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[All-In-1-Min] 【整理】2010-12-29 BBC Audio News

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[All-In-1-Min] 【整理】2010-12-29 BBC Audio News

 

      All-In-1-Min-2010-12-29

  

'Ice volcano' found on Saturn's moon





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shuangsila在 整理的参考文本:
Titan is a mysterious world. Because it's shrouded in a thick, oily haze, it's extremely hard to identify anything at the moon with confidence. But with temperatures that plunge to minus 180 Celsius at the surface, researchers had suspected it might have ice volcanoes.

And now the Cassini probe has spotted a 1,500m-high mountain with a deep pit in it, and what looks like a flow of material nearby.

Scientists can only speculate what sort of material a cryo-volcano might erupt, but the complex chemistry at Titan suggests it could be a slushy water-ice containing ammonia.

If there are a lot of carbon molecules present, the lava could even look like softened asphalt, candle wax or even polyethylene.

The team which discovered the mountain have dubbed it "the Rose".

shuangsila在 整理的生词:
shrouded: partly hidden or covered

haze: a mist or substance in the air which partly obscures what is behind it

plunge: to fall quickly

probe: here, an unmanned spacecraft which has been launched from Earth to study Saturn and Titan

spotted: seen or identified

speculate: guess about the nature of something

erupt: here, when the volcano violently throws out material that is inside it

slushy: partly melted

molecules: the smallest, most basic elements which make up a chemical substance

dubbed: named in an unofficial or affectionate way

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