英语听力：自然百科 行星旅行指南：木星 Jupiter—13

 Gas escaping into space from the plumes¹ is energized² by Jupiter’s magnetosphere, creating an intense band of ionizing radiation that bombards a surface already soaked in emissions³. 

 

If you went out relatively⁴ unprotected with, like a normal spacesuit from our space programs these days and walked down on the surface, you’ll get a lethal⁵ dose of radiation in minutes. 

 

There is one corner of the Jovian system where you could find some unexpected protection from Jupiter’s dangerous space weather. Ganymede, the largest moon in the solar system, comes complete with its very own force field.

 

There is something happening in the interior that is active enough to generate electrical currents and produce magnetic field.

 

Ganymede’s deep interior is probably hot today. And we know this because Ganymede has its own internally generated magnetic fields, which says that it has an iron core that’s hot and convecting today.

 

Sitting safely under Ganymede’s magnetic umbrella is a good spot to gaze up at Jupiter’s amazing non-stop auroras, 100 times more powerful than Earth’s. 

 

It would be (a) pretty beautiful sight, from my position, on Ganymede. Perhaps I have a drink in my hand and I might be able to see this spectacular/oval, unfolding in a dynamic, you know, vista⁶ right in front. That would be pretty cool.

 

From Ganymede you also see the last of Jupiter’s big four moons, Callisto. Callisto is a kind of having been the dull, boring center of a satellite of the system ever since we saw its dark, pockmarked, very heavily-cratered ancient surface.

 

The battered⁷ surfaces of Callisto and Ganymede reveal a darker side of living in the same cosmic neighborhood with a giant, like Jupiter。

1 plumes   

羽毛( plume的名词复数 )； 羽毛饰； 羽毛状物； 升上空中的羽状物

参考例句：

• The dancer wore a headdress of pink ostrich plumes. 那位舞蹈演员戴着粉色鸵鸟毛制作的头饰。
• The plumes on her bonnet barely moved as she nodded. 她点点头，那帽子的羽毛在一个劲儿颤动。

2 energized   

v.给予…精力，能量( energize的过去式和过去分词 )；使通电

参考例句：

• We are energized by love if we put our energy into loving. 如果我们付出能量去表现爱意，爱就会使我们充满活力。 来自辞典例句
• I am completely energized and feeling terrific. 我充满了活力，感觉非常好。 来自辞典例句

3 emissions   

排放物( emission的名词复数 )； 散发物（尤指气体）

参考例句：

• Most scientists accept that climate change is linked to carbon emissions. 大多数科学家都相信气候变化与排放的含碳气体有关。
• Dangerous emissions radiate from plutonium. 危险的辐射物从钚放散出来。

4 relatively   

adv.比较...地，相对地

参考例句：

• The rabbit is a relatively recent introduction in Australia.兔子是相对较新引入澳大利亚的物种。
• The operation was relatively painless.手术相对来说不痛。

5 lethal   

adj.致死的；毁灭性的

参考例句：

• A hammer can be a lethal weapon.铁锤可以是致命的武器。
• She took a lethal amount of poison and died.她服了致命剂量的毒药死了。

6 vista   

n.远景，深景，展望，回想

参考例句：

• From my bedroom window I looked out on a crowded vista of hills and rooftops.我从卧室窗口望去，远处尽是连绵的山峦和屋顶。
• These uprisings come from desperation and a vista of a future without hope.发生这些暴动是因为人们被逼上了绝路，未来看不到一点儿希望。

7 battered   

adj.磨损的；v.连续猛击；磨损

参考例句：

• He drove up in a battered old car.他开着一辆又老又破的旧车。
• The world was brutally battered but it survived.这个世界遭受了惨重的创伤,但它还是生存下来了。