Above the stratosphere , blue layers mark the upper atmosphere ( including the mesosphere , thermosphere , ionosphere , and exosphere ) as it gradually fades into the blackness of outer space .

在大气层上，蓝色的部分表示上层大气（包括中间层、热层、电离层、外逸层），它们渐渐消逝到外空间的黑暗中。

The presence of the moons exosphere was confirmed by instruments on the cassini probe which orbits saturn and its moons .

围绕土星和它的卫星运行的卡西尼号探测器证实了卫星外逸层的存在。

Mercurian atmosphere is thin enough to be described as an exosphere , meaning the constituent atoms never collide .

汞自然的气氛更薄，足以被描述为散逸层，也就是说，没有碰撞原子组成。