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repasamos-conceptos-recortando-y-pegando-iii-11

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The Mohs scale of mineral hardness characterizes the scratch resistance of various minerals through the ability of a harder material to scratch a softer material. It was created in 1812 by the German geologist and mineralogist Friedrich Mohs and is one of several definitions of hardness in materials science.

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Anti-Matter infographic. (View it quickly before it meets up with the matter infographic.)

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Infographic: Black holes are strange regions where gravity is strong enough to bend light, warp space and distort time.

Infographic: Black holes are strange regions where gravity is strong enough to bend light, warp space and distort time.

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Cantera Opal - gives you the impression of floating over sun lite clouds

W49B: Rare Explosion May Have Created Our Galaxy's Youngest Black Hole.

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Royal Velvet Obsidian Cabochon-38x22x6mm

Royal Velvet Obsidian

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Simulating Time Travel: Doctor Who Encounters Professor Heisenberg | Physics-Astronomy

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