Star Blaster

Star Blaster

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I'm interested about science, space, universe, stars, galaxies and solar systems.
Star Blaster
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http://www.geologyin.com/2016/02/10-interesting-facts-about-geodes.html

Thunder egg is a nodule-like rock, similar to a filled geode, that is formed within volcanic ash layers. credit: Bill The Eggman Ge.