 Here we are panning across the Kleinman-Low Nebula 1,300 light-years away at the heart of the Orion molecular cloud. It is the most active star-forming region in Orion. Cloaked in dust, the stars of Kleinman-Low are only visible in infrared light. Decades ago, researchers found two stars, labeled BN and I, traveling at high speeds in opposite directions. They traced both stars back 540 years to the same location. This suggested that they were part of a multiple-star system, but the duo's combined energy, which is propelling them outward, didn't add up. The researchers reasoned that there must be at least one other star that took kinetic energy from the other two. While searching for rogue planets and brown dwarfs among the turbulence, astronomers have found a star, labeled X, moving at an unusually high speed, about 200,000 kilometers per hour. That's almost 30 times the speed of most Orion stars. It's thought that this star might be the missing piece of the star system. If this is the missing star, it might shed light on just what caused the three-star system to break apart in the first place in the year 1477.