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Where Are All the Aliens? Maybe Trapped in Underground Oceans
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Subsurface oceans on alien worlds even better for life than Earth s oceans? | Space
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Worlds with hidden oceans give hope for life beyond Earth, scientist says
Secret ocean worlds may be common in other star systems. Listen - 01:49
Saturn s moon Titan is a fascinating place. NASA/JPL-Caltech/Space Science Institute
We re pretty fond of Earth, a planet covered in exposed oceans, and we keep looking for far-off planets that might be similar and capable of hosting life. But instead of looking harder, scientists may have to look deeper.
That s one takeaway from a paper that suggests planets and moons with water hidden beneath their crust may be common in other solar systems and that they could potentially host life, vastly expanding the conditions for planetary habitability and biological survival over time. The paper, presented this week by Southwest Research Institute planetary scientist S. Alan Stern, looks at what it calls interior water ocean worlds, or IWOWs (PDF