Earth seems drenched with water from mountaintop to ocean bottom.
But our home planet is a desert compared to some places the solar system, both in terms of its total water volume and the amount of liquid on Earth relative to its size.
Consider Jupiter’s ice-encrusted moon Europa, which is smaller than Earth’s moon. Scientists recently used 20-year-old Voyager data to find even more evidence that Europa has twice as much water as our planet. Read more
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