Ancient shoreline features hint that water on Mars once formed a vast ocean.
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Mars was once a blue planet with a vast ocean, ancient rivers reveal
Mars, now a dusty world of rusted rock and thin air, once carried enough water to transform its face into something far more ...
Spacecraft orbiting the Red Planet have helped researchers map out an ancient coastline that surrounded a large ocean billions of years ago ...
Europa has a deep ocean, but a new study suggests its seafloor may be too quiet to supply the energy life needs to survive.
Scientists have traced ancient Martian shorelines inside a giant canyon, revealing where a vast ocean once stood and why ...
The world’s first legally binding agreement to protect marine life in international waters took effect on Saturday ...
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