Saturday, March 29, 2014

The Midnight Astronaut asks:-


Tonight's 'Question Everything' is -

"What's the story on these old healed-over cracks in the crust, as if large sheets of ice split apart and then re-froze together later?" Does this or did this once have a fluid core? What's its surface made of? What's the greenish tinting near the terminator? Is it an oxide of copper?"

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