04-04-2018 17:21 via feedproxy.google.com

Space Metal Has Captivated Humanity for Ages

Legions of metal nuggets swirl about our solar system. Metallic asteroids number in the millions, but they're relatively quite rare—bits and pieces of lonely matter that never became planets.Occasionally, they find a home. A tiny fraction of these dull, misshapen hunks of metal have rained onto our planet for millennia, sparking briefly alight as they kiss the atmosphere before biting deep into the planet's surface—if they aren't incinerated first.An even smaller fraction m
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