We know that asteroids can do a lot of damage. One barreled into the Yucatan Peninsula 66 million years ago and caused the demise of 70 percent of all life on Earth, including the dinosaurs. Within moments the six-mile-wide chunk of rock, known as the Chicxulub impactor, caused tsunamis so large that the Great Plains were overwhelmed with water.
Giant shock waves reverberated across the planet, clouding the sky with volcanic eruptions and shaking the ground with endless earthquakes. What's worse, no one saw this mega-disaster coming, which leaves us to wonder: could it happen again? What's out there, and do we know if it's headed our way?
Read More: Giant Ripples Under Louisiana Are Evidence of the Dinosaur-Killing Asteroid Impact
