A rich spectrum of molecular hydrogen (H _2 ) emission lines is seen in sensitive observations from the far-ultraviolet (FUV) channels of the Interface Region Imaging Spectrograph (IRIS) during flare activity in solar active region NOAA Active Region 11861. Based on this observation. we have determined 37 new line identifications by comparing synthetic spectra produced using 1D modeli... https://www.roneverhart.com/Stardust-XLF/