Something The Size of Pluto Once Smashed Into Mars This impact would make the one that killed the dinosaurs look like a pebble. It shook Mars to its core and changed it forever. Facebook Prev Article Next Article Discover Checkout these cool gadgets... Related Posts Can Humans Control Lightning? Why Is Mixing Prescription Drugs Deadly? Osmium – The Rarest Naturally Occurring Element 7 Mind-Boggling Substances That Seem to Defy The Laws of Physics Can A Starfox Barrel Roll Work In Space? Is There a Fifth Fundamental Force?