“…are even smaller (De Gregorio et al., 2013; Garvie et al., 2008; Nakamura‐Messenger et al., 2006; Yesiltas, Glotch, & Sava, 2021). Spatial resolution of conventional IR methods generally varies from >5 μm (Dartois et al., 2023) to 25 μm (Morlok et al., 2020), and it goes down to ∼1 μm if multi‐beam synchrotron radiation and array detectors are used (Nasse et al., 2011; Yesiltas et al., 2014; Yesiltas & Kebukawa, 2016). Thus, conventional IR methods cannot be used to detect and identify spectral signatures of nanoscale organic matter in situ in extraterrestrial samples because of their insufficient spatial resolution and various other technical limitations (such as optical diffraction limit, wavelength dependence).…”