Spectrum NIR reflectance spectrum of UARK tholins at ambient T and P in N2 atmosphere, before C2H6 pouring Spectrum NIR reflectance spectrum of UARK tholins + C2H6 at 89K in N2 atmosphere Spectrum NIR reflectance spectrum of UARK tholins + C2H6 at 163K in N2 atmosphere Spectrum NIR reflectance spectrum of UARK tholins + C2H6 at 186K in N2 atmosphere Spectrum NIR reflectance spectrum of UARK tholins + C2H6 at 220K in N2 atmosphere Spectrum NIR reflectance spectrum of UARK tholins + C2H6 at 223.5K in N2 atmosphere

Spectrum NIR reflectance spectrum of UARK tholins after pouring liquid CH4 at 93.5K in N2 atmosphere Spectrum NIR reflectance spectrum of UARK tholins after pouring liquid CH4 at 88.8K in N2 atmosphere Spectrum NIR reflectance spectrum of UARK tholins after pouring liquid CH4 at 262.4K in N2 atmosphere

Spectrum NIR reflectance spectrum of UARK tholins at 289.7K in N2 atmosphere, before C2H6 and CH4 pouring Spectrum NIR reflectance spectrum of UARK tholins with C2H6 at 91.3K in N2 atmosphere, CH4 not yet poured Spectrum NIR reflectance spectrum of UARK tholins with 4 to 5 g of C2H6 and after pouring 10 to 12 g of CH4, taken at 91.8K in N2 atmosphere Spectrum NIR reflectance spectrum of UARK tholins with 4 to 5 g of C2H6 and after pouring 10 to 12 g of CH4, taken at 102.5 K in N2 atmosphere during passive warming Spectrum NIR reflectance spectrum of UARK tholins with 4 to 5 g of C2H6 and after pouring 10 to 12 g of CH4, taken at 214 K in N2 atmosphere during passive warming

Spectrum NIR reflectance spectrum of UARK tholins with 9 g of CH4, taken at 93.5 K during cooling after chamber purging and infilling with new N2 atmosphere Spectrum NIR reflectance spectrum of UARK tholins + CH4 at 86.7 K at the end of cooling Spectrum NIR reflectance spectrum of UARK tholins + evaporating or evaporated CH4 at 190 K

Spectrum NIR reflectance spectrum of UARK tholins before pouring C2H6+CH3CN, ambient T Spectrum NIR reflectance spectrum of UARK tholins after pouring C2H6+CH3CN, 90 K Spectrum NIR reflectance spectrum of UARK tholins after pouring C2H6+CH3CN, 96.5 K Spectrum NIR reflectance spectrum of UARK tholins after pouring C2H6+CH3CN, 104.6 K Spectrum NIR reflectance spectrum of UARK tholins after pouring C2H6+CH3CN, 121 K

Spectrum NIR reflectance spectrum of UARK tholins after the CH4/C2H6/CH3CN sub-experiment cycles with the same fiber optics as used in the simulation chamber (3m + 12m) Spectrum NIR reflectance spectrum of UARK tholins after the CH4/C2H6/CH3CN sub-experiment cycles Spectrum MIR reflectance spectrum of UARK tholins after the CH4/C2H6/CH3CN sub-experiment cycles Spectrum MIR reflectance spectrum of UARK tholins after the CH4/C2H6/CH3CN sub-experiment cycles