AssetID: 53866536
Headline: NASA Discovers Mysterious Martian 'Hole' That Could Shelter Future Astronauts
Caption: 'LiveScience' reports that scientists have discovered a mysterious pit on the side of an ancient volcano on Mars. The discovery has generated excitement due to what it may reveal beneath the Red Planet's surface.
Keywords: NASA,discovers,mysterious,martian,hole,could,shelter,future,astronauts,ancient,volcano,Mars,discovery,universe,space,travel,Red Planet,surface,crewed missions,cave,life,flourish
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