On August 11 , 2014 , astronomers released studies , using the Atacama Large Millimeter / Submillimeter Array ( ALMA ) for the first time , that detailed the distribution of Hydrogen cyanide , Hydrogen isocyanide , Formaldehyde , and dust inside the comae of comet s C / 2012 F6 ( Lemmon ) and C / 2012 S1 ( ISON ) .