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The importance of multi-band Deep Field observations to study distant galaxies has become evident during the last few decades. Among various wavelengths, rest-frame far-ultraviolet emission is particularly sensitive to both young stellar populations and interstellar dust in galaxies. I will first discuss how the UV imaging from the Ultra-Violet Imaging Telescope (UVIT) onboard AstroSat, combined with other observations, has helped us to disentangle the dust content and the nature of the attenuation law in star-forming galaxies at redshift ~ 0.5 - 0.8. I will also demonstrate how JWST MIRI imaging of galaxies in the AUDFs field is used to probe the 7.7 and 11.3 μm emission features of Polycyclic Aromatic Hydrocarbon (PAH) molecules under varying stellar radiation fields within the same redshift window. Overall, I will present key insights into interstellar dust in a relatively unexplored redshift range that bridges the cosmic noon and the present-day universe. I will also discuss the unique scope of the AUDF survey in discovering Lyman Continuum (LyC) leaking galaxies at redshift ~ 1 - 3, along with our recent finding of a z=2.9803 potentially LyC leaking galaxy (GNHeII~J1236+6215) showing a promising signature of PopIII-like star formation.