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 Should We Even Try to Extinguish Wild Fires? 97% of Climate Scientists Really Do Agree Is This UFO Activity Over Mt. Etna? Why The US Military Made GPS Free-To-Use Archimedes and a Boat Lift: the Falkirk Wheel What If The President Were A Robot?