Hunt for Exomoons with Kepler

The Hunt for Exomoons with Kepler (HEK) was a project whose aim was to search for exomoons, natural satellites of exoplanets, using data collected by the Kepler space telescope. Founded by British exomoonologist David Kipping and affiliated with the Center for Astrophysics | Harvard & Smithsonian, HEK submitted its first paper on June 30, 2011.

Source: Wikipedia — Hunt for Exomoons with Kepler (CC BY-SA 4.0)