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A newly released study from NASA shows Mars had an ancient ocean that might have been as large as Earth's Arctic Ocean.
A newly released study from NASA shows Mars had an ancient ocean that might have been as large as Earth's Arctic Ocean.

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    NASA: Mars had massive, mile-deep ocean

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NASA: Mars had massive, mile-deep ocean

A newly released study from NASA shows Mars had an ancient ocean that might have been as large as Earth's Arctic Ocean.

NASA: Mars had massive, mile-deep ocean

A newly released study from NASA shows Mars had an ancient ocean that might have been as large as Earth's Arctic Ocean.