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Ask an Astrobiologist has received nearly a thousand questions about Nibiru and 2012, with more than 200 answers posted. Please read a summary of the answers that have already been posted, use the search feature and read the FAQ’s before submitting questions on these topics.
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Question
What would earth look like without water on it? What would be the shape of the 'piece of rock' that would remain?
If you started with the planet as it is today and removed the water suddenly, there would be some rebound in the ocean basins in response to to removal of the pressure of the water. More generally, however, many geologists think that in the absence of water there would be no plate tectonics, and in that case the geology of our planet would be entirely different. With less geological activity, one of the consequences would be the survival of many more impact craters.
David Morrison
NAI Senior Scientist
September 1, 2004
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