Appropriately named after the Hawaiian word meaning “a messenger from afar arriving first,” ‘Oumuamua is the first known interstellar object ever observed, and it’s quite an interesting (not so) little rock. It was discovered on October 19, 2017 when astronomers at the University of Hawaii working on Pan-STARRS1 noticed an object traveling at high speeds across our solar system, escaping the gravitational pull of our Sun, thrusting itself on a trajectory to leave our solar system. It is about 230 by 35 meters, and is dark red in color. Speculated to have been ejected from a distant star system, its existence in our solar neighborhood has allowed researchers a new perspective on how planetary systems develop, along with some interesting theories on where it came from.

As of July 2018 ‘Oumuamua is no longer visible to telescopes. Its origins and amount of time it has spent sailing the stars remains unknown.

SEE ALSO: Additional Information on ʻOumuamua, Our First Interstellar Visitor.