Astronomers say they may have found the first confirmed exomoon, or moon orbiting a planet outside of our solar system. However, the pair of astronomers behind the find say it’s much too soon to completely prove the exomoon’s presence.

After looking through recent data from NASA’s Kepler space telescope, Alex Teachey, a graduate researcher in the department of astronomy at Columbia University, and David M. Kipping, an assistant professor in the same department, spotted evidence that an ex