The X3 Ion Thruster Is Here, This Is How It’ll Get Us to Mars The X3 is a new type of propulsion engine that smashed records during test firings. This engine and other electric propulsion systems will help us reach distant planets faster than ever before. Facebook Prev Article Next Article Space Checkout these cool gadgets... Related Posts How Does NASA Detect Atmospheres on Distant Worlds? Life on Enceladus “World’s first battery-powered rocket” readied for launch Mysterious Plumes on Mars Have Scientists Stumped Did Earth Have Two Moons? Who Built This Mystery Circle On Mars?