All the Water on Earth and Europa
The subsurface ocean plus ice layer could range from 80 to 170 kilometers in average depth. With an estimation of 100 kilometers depth, if all the water on Europa were gathered into a ball it would have a radius of 877 kilometers.
With a volume 2-3 times the volume of water in Earth’s oceans, the global ocean on Europa is an excellent spot for search for extraterrestrial life in our solar system.
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