Could 'Planet X' Cause Comet Catastrophes on Earth?

TECH SPACE HUMAN EARTH HISTORY ANIMALS ADVENTURE VIDEO View Online Could 'Planet X' Cause Comet Catastrophes on Earth? A classic planetary purveyor of doom is resurrected as astronomers learn more about a large world orbiting the sun in the solar system's outer fringes. READ MORE Hive Skyscraper Supports Future's Drone Highways The building would allow drones to dock legally in NYC, away from no-fly zones. READ MORE WATCH VIDEO: Drone Pilots Get Stress Disorders Too Drone pilots do their work from remote locations, but that doesn't keep them entirely out of harm's way. 2-Faced Exoplanet Is Both Solid and Molten Rock One hemisphere of a nearby exoplanet is almost completely molten rock, while the other half is almost completely solid. READ MORE WATCH VIDEO: Could Aliens Be Living On Exomoons? Astronomers are fascinated by exoplanets and the possibility of life on these worlds. Should they also focus on exomoons? How Earthquake-Resistant Buildings Are Designed Would your office stand a chance of surviving a serious earthquake? WATCH Follow Discovery News on Facebook! Get your sci-tech headlines all day on Twitter too! At Discovery Communications, we value your privacy. If you would like to be removed from future communications like this, please click here. Privacy Policy Discovery Communications, LLC One Discovery Place Silver Spring, MD 20910 © Copyright 2015 Discovery Communications, LLC