欧罗巴

Earth without water is shown on the right, while Jupiter’s moon Europa is shown on the left. Superposed on each object is a blue sphere estimating the amount of water each object contains. The blue spheres are about the same size. Please see the explanation for more detailed information.
右侧显示的是没有水的地球，左侧显示的是木星的卫星木卫二。每个物体上都叠加了一个蓝色球体，用于估算每个物体所含的水量。这些蓝色球体大小大致相同。有关更多详细信息，请参阅说明。