adj. exospheric
misc. exospherical ; exoatmospheric
微粒的飞溅不仅在水星上空形成了一个超级稀薄的大气层（更准确的说是外大气层），而且还改变了水星地表的颜色，反射比，以及化学成分。
The impacts also change the colour, reflectance and chemistry of the surface over time.
太阳能电池板在200英里外空间受到的太阳光强度，是太阳光通过大气层过滤射在地面时强度的10倍。
The sunlight hitting solar panels 200 miles in space would be 10 times as powerful as the light filtering down to Earth through the atmosphere.
但“萤火虫1号”也将探索火星的外大气层，目的是找出这颗红色星球上水消失了的原因。
But Yinghuo 1 will also be exploring the upper atmosphere of mars-aiming to discover why water vanished from the red planet.
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