On October 19th, for the first time in history, we detected an object inside of our solar system that originated somewhere else. When it’s in interstellar space, Rama travels at 26 km/s (with respect to the Sun), which is about how fast other stars in our stellar neighborhood are moving. For comparison, once Voyager 1 has shaken the Sun’s gravitational pull, it will be traveling at about 13 km/s through interstellar space. It formed somewhere that wasn’t here, and was ejected from its home star system through an impact event or gravitational slingshot. It could be a very old comet or a native of an inner solar system.