Water in the Universe: the plumes of Enceladus
Enceladus wobbles, as it orbits Saturn, and this may be explained by the presence of a liquid layer between the solid core and the crust.
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Water in the Universe: an ocean in Europa
It is thought that, below Europa’s icy crust, there may exist a water ocean that completely covers its rocky interior.
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Water in the Universe: water on Mars
There is water on Mars, but up to recently we believed that it would be present only in the atmosphere and as water ice.
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