Conversation

The amount on water on Earth should be a Drake equation term. It's 0.02% of Earth's mass. If it was just 0.07% there would be no continents! Life would have taken a markedly different trajectory.
Earth seen from space on the Google Earth app, over the Pacific. The Pacific ocean occupies most of the view. Australia and the Americas are only barely visible at the left and right edges of the Earth, respectively.
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