Space/Science — HabitableZone

Space/Science » in reply to Comet 17P/Holmes, one year later

Speaking of crystalline caves

This is amazing:

http://martianchronicles.wordpress.com/2008/10/21/massive-crystals-the-coolest-thing-ive-ever-seen/

I wonder if this is what it might look like inside a comet, even if
the materials are different.

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