Water, Water Everywhere? A Highly Surprising Graphic

If all the water in the world were collected and put next to the planet Earth, it would look like this:

waterlessearth_woodshole_960

After seeing this, it seems much more plausible that all our water came from comets and asteroids. It also makes our planet’s water seem even more precious.

There’s more here at NASA’s Astronomy Picture of the Day.

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