lava tubes

What Are These Hollows on Mercury?

by Fraser Cain March 26, 2014

Emily Lakdawalla from the planetary society describes one of the mysteries that’s currently fascinating her. There are strange structures on Mercury which have been called “hollows”. What might they be? Fraser Cain on Google+

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LRO Takes Closer Look at Moon Caves

by Nancy Atkinson September 15, 2010

As promised, the Lunar Reconnaissance Orbiter is taking more detailed looks at the lunar pits, or lava tubes that have been discovered by LRO and the Kaguya spacecraft. These are deep holes on the moon that could open into vast underground tunnels, and could serve as a safe, radiation shielding habitats for future human lunar […]

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