The high angular resolution enables a detailed study of the structure of the HI component in the inner disk. In combination with multi-wavelength data this will enable comprehensive studies of the detailed, local links between the gas and star formation in a galaxy. In the outer parts of galaxies, where HI dominates, the ratio of UV or Hα to HI column density is the key tracer of the timescale and efficiency of star formation. With a large, comprehensive sample, the angular resolution to isolate specific conditions of the ISM, and the velocity resolution to separate warm and cold HI, MHONGOOSE promises to be the ultimate data set to study star formation at and beyond the edges of galaxies. 

Image credit: SARAO