Scientists Think Mars Once Had Water. So What Happened to It? Mars may have had a core similar to Earth’s. It’s possible that when it diminished, the planet’s water went with it. Facebook Prev Article Next Article Space Checkout these cool gadgets... Related Posts The First Warp-Bubble Created by DARPA SpaceX Lands Rocket on Drone Ship We Stopped Dreaming [NASA] Something Is Buried On Mars Space Solar Power Systems (SSPS) Astronomers Spot Square Hole In Sun