This animation shows the path of A/2017 U1, which is an asteroid — or perhaps a comet — as it passed through our inner solar system in September and October 2017. From analysis of its motion, scientists calculate that it probably originated from outside of our solar system. NASA/JPL-Caltech

The First Interstellar Object to Be Seen May Have Just Visited Our Solar System

The object zoomed into our solar system from an extreme angle above the path in which most planets and asteroids orbit the sun.

A diagram of A/2017 U1’s path compared to a normal comet within our solar system. Brooks Bays/SOEST Publication Services/UH Institute for Astronomy