Columbia Astronomy faculty member David Kipping and the Cool Worlds Lab have uncovered evidence for what would be only the second candidate of an exomoon candidate identified. The team found the candidate by careful measurements of the transit of Kepler 1708b, a planet 5,500 light-years from Earth, in the direction of the Cygnus and Lyra constellations. To find it, they scrutinized a sample of 70 planets culled from those detected by the NASA spacecraft Kepler. More details can be found here and the original paper is published in Nature.